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- 2 participants
- 301 discussions
15 May '17
Hi, all!
There's a new Tor release (0.3.0.7) available on the website. It
fixes a bug affecting relays running earlier versions of 0.3.0.x that
could allow attackers to trigger an assertion failure on those relays.
Clients are not affected; neither are relays running versions before
0.3.0.x.
If you're running a relay with one of the affected versions, you
should upgrade. Source is available on the website now; packages
should be available over the next several days.
===========
Changes in version 0.3.0.7 - 2017-05-15
Tor 0.3.0.7 fixes a medium-severity security bug in earlier versions
of Tor 0.3.0.x, where an attacker could cause a Tor relay process
to exit. Relays running earlier versions of Tor 0.3.0.x should upgrade;
clients are not affected.
o Major bugfixes (hidden service directory, security):
- Fix an assertion failure in the hidden service directory code, which
could be used by an attacker to remotely cause a Tor relay process to
exit. Relays running earlier versions of Tor 0.3.0.x should upgrade.
should upgrade. This security issue is tracked as TROVE-2017-002.
Fixes bug 22246; bugfix on 0.3.0.1-alpha.
o Minor features:
- Update geoip and geoip6 to the May 2 2017 Maxmind GeoLite2
Country database.
o Minor features (future-proofing):
- Tor no longer refuses to download microdescriptors or descriptors
if they are listed as "published in the future". This change will
eventually allow us to stop listing meaningful "published" dates
in microdescriptor consensuses, and thereby allow us to reduce the
resources required to download consensus diffs by over 50%.
Implements part of ticket 21642; implements part of proposal 275.
o Minor bugfixes (Linux seccomp2 sandbox):
- The getpid() system call is now permitted under the Linux seccomp2
sandbox, to avoid crashing with versions of OpenSSL (and other
libraries) that attempt to learn the process's PID by using the
syscall rather than the VDSO code. Fixes bug 21943; bugfix
on 0.2.5.1-alpha.
1
0
Hi, all! After months of work, a new Tor release series is finally
stable.
(If you are about to reply saying "please take me off this list",
instead please follow these instructions:
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-announce/
. If you have trouble, it is probably because you subscribed using a
different address than the one you are trying to unsubscribe with.
You will have to enter the actual email address you used to
subscribe.)
You can download the source code from the usual place on the website.
Packages should be up within the next several weeks, with the next Tor
Browser release planned around the end of May or beginning of June.
======
Changes in version 0.3.0.6 - 2017-04-26
Tor 0.3.0.6 is the first stable release of the Tor 0.3.0 series.
With the 0.3.0 series, clients and relays now use Ed25519 keys to
authenticate their link connections to relays, rather than the old
RSA1024 keys that they used before. (Circuit crypto has been
Curve25519-authenticated since 0.2.4.8-alpha.) We have also replaced
the guard selection and replacement algorithm to behave more robustly
in the presence of unreliable networks, and to resist guard-
capture attacks.
This series also includes numerous other small features and bugfixes,
along with more groundwork for the upcoming hidden-services revamp.
Per our stable release policy, we plan to support the Tor 0.3.0
release series for at least the next nine months, or for three months
after the first stable release of the 0.3.1 series: whichever is
longer. If you need a release with long-term support, we recommend
that you stay with the 0.2.9 series.
Below are the changes since 0.2.9.10. For a list of only the changes
since 0.3.0.5-rc, see the ChangeLog file.
o Major features (directory authority, security):
- The default for AuthDirPinKeys is now 1: directory authorities
will reject relays where the RSA identity key matches a previously
seen value, but the Ed25519 key has changed. Closes ticket 18319.
o Major features (guard selection algorithm):
- Tor's guard selection algorithm has been redesigned from the
ground up, to better support unreliable networks and restrictive
sets of entry nodes, and to better resist guard-capture attacks by
hostile local networks. Implements proposal 271; closes
ticket 19877.
o Major features (next-generation hidden services):
- Relays can now handle v3 ESTABLISH_INTRO cells as specified by
prop224 aka "Next Generation Hidden Services". Service and clients
don't use this functionality yet. Closes ticket 19043. Based on
initial code by Alec Heifetz.
- Relays now support the HSDir version 3 protocol, so that they can
can store and serve v3 descriptors. This is part of the next-
generation onion service work detailled in proposal 224. Closes
ticket 17238.
o Major features (protocol, ed25519 identity keys):
- Clients now support including Ed25519 identity keys in the EXTEND2
cells they generate. By default, this is controlled by a consensus
parameter, currently disabled. You can turn this feature on for
testing by setting ExtendByEd25519ID in your configuration. This
might make your traffic appear different than the traffic
generated by other users, however. Implements part of ticket
15056; part of proposal 220.
- Relays now understand requests to extend to other relays by their
Ed25519 identity keys. When an Ed25519 identity key is included in
an EXTEND2 cell, the relay will only extend the circuit if the
other relay can prove ownership of that identity. Implements part
of ticket 15056; part of proposal 220.
- Relays now use Ed25519 to prove their Ed25519 identities and to
one another, and to clients. This algorithm is faster and more
secure than the RSA-based handshake we've been doing until now.
Implements the second big part of proposal 220; Closes
ticket 15055.
o Major features (security):
- Change the algorithm used to decide DNS TTLs on client and server
side, to better resist DNS-based correlation attacks like the
DefecTor attack of Greschbach, Pulls, Roberts, Winter, and
Feamster. Now relays only return one of two possible DNS TTL
values, and clients are willing to believe DNS TTL values up to 3
hours long. Closes ticket 19769.
o Major bugfixes (client, onion service, also in 0.2.9.9):
- Fix a client-side onion service reachability bug, where multiple
socks requests to an onion service (or a single slow request)
could cause us to mistakenly mark some of the service's
introduction points as failed, and we cache that failure so
eventually we run out and can't reach the service. Also resolves a
mysterious "Remote server sent bogus reason code 65021" log
warning. The bug was introduced in ticket 17218, where we tried to
remember the circuit end reason as a uint16_t, which mangled
negative values. Partially fixes bug 21056 and fixes bug 20307;
bugfix on 0.2.8.1-alpha.
o Major bugfixes (crash, directory connections):
- Fix a rare crash when sending a begin cell on a circuit whose
linked directory connection had already been closed. Fixes bug
21576; bugfix on 0.2.9.3-alpha. Reported by Alec Muffett.
o Major bugfixes (directory authority):
- During voting, when marking a relay as a probable sybil, do not
clear its BadExit flag: sybils can still be bad in other ways
too. (We still clear the other flags.) Fixes bug 21108; bugfix
on 0.2.0.13-alpha.
o Major bugfixes (DNS):
- Fix a bug that prevented exit nodes from caching DNS records for
more than 60 seconds. Fixes bug 19025; bugfix on 0.2.4.7-alpha.
o Major bugfixes (IPv6 Exits):
- Stop rejecting all IPv6 traffic on Exits whose exit policy rejects
any IPv6 addresses. Instead, only reject a port over IPv6 if the
exit policy rejects that port on more than an IPv6 /16 of
addresses. This bug was made worse by 17027 in 0.2.8.1-alpha,
which rejected a relay's own IPv6 address by default. Fixes bug
21357; bugfix on commit 004f3f4e53 in 0.2.4.7-alpha.
o Major bugfixes (parsing):
- Fix an integer underflow bug when comparing malformed Tor
versions. This bug could crash Tor when built with
--enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
0.2.9.8, which were built with -ftrapv by default. In other cases
it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
on 0.0.8pre1. Found by OSS-Fuzz.
- When parsing a malformed content-length field from an HTTP
message, do not read off the end of the buffer. This bug was a
potential remote denial-of-service attack against Tor clients and
relays. A workaround was released in October 2016, to prevent this
bug from crashing Tor. This is a fix for the underlying issue,
which should no longer matter (if you applied the earlier patch).
Fixes bug 20894; bugfix on 0.2.0.16-alpha. Bug found by fuzzing
using AFL (http://lcamtuf.coredump.cx/afl/)
o Major bugfixes (scheduler):
- Actually compare circuit policies in ewma_cmp_cmux(). This bug
caused the channel scheduler to behave more or less randomly,
rather than preferring channels with higher-priority circuits.
Fixes bug 20459; bugfix on 0.2.6.2-alpha.
o Major bugfixes (security, also in 0.2.9.9):
- Downgrade the "-ftrapv" option from "always on" to "only on when
--enable-expensive-hardening is provided." This hardening option,
like others, can turn survivable bugs into crashes--and having it
on by default made a (relatively harmless) integer overflow bug
into a denial-of-service bug. Fixes bug 21278 (TROVE-2017-001);
bugfix on 0.2.9.1-alpha.
o Minor feature (client):
- Enable IPv6 traffic on the SocksPort by default. To disable this,
a user will have to specify "NoIPv6Traffic". Closes ticket 21269.
o Minor feature (fallback scripts):
- Add a check_existing mode to updateFallbackDirs.py, which checks
if fallbacks in the hard-coded list are working. Closes ticket
20174. Patch by haxxpop.
o Minor feature (protocol versioning):
- Add new protocol version for proposal 224. HSIntro now advertises
version "3-4" and HSDir version "1-2". Fixes ticket 20656.
o Minor features (ciphersuite selection):
- Allow relays to accept a wider range of ciphersuites, including
chacha20-poly1305 and AES-CCM. Closes the other part of 15426.
- Clients now advertise a list of ciphersuites closer to the ones
preferred by Firefox. Closes part of ticket 15426.
o Minor features (controller):
- Add "GETINFO sr/current" and "GETINFO sr/previous" keys, to expose
shared-random values to the controller. Closes ticket 19925.
- When HSFETCH arguments cannot be parsed, say "Invalid argument"
rather than "unrecognized." Closes ticket 20389; patch from
Ivan Markin.
o Minor features (controller, configuration):
- Each of the *Port options, such as SocksPort, ORPort, ControlPort,
and so on, now comes with a __*Port variant that will not be saved
to the torrc file by the controller's SAVECONF command. This
change allows TorBrowser to set up a single-use domain socket for
each time it launches Tor. Closes ticket 20956.
- The GETCONF command can now query options that may only be
meaningful in context-sensitive lists. This allows the controller
to query the mixed SocksPort/__SocksPort style options introduced
in feature 20956. Implements ticket 21300.
o Minor features (diagnostic, directory client):
- Warn when we find an unexpected inconsistency in directory
download status objects. Prevents some negative consequences of
bug 20593.
o Minor features (directory authorities):
- Directory authorities now reject descriptors that claim to be
malformed versions of Tor. Helps prevent exploitation of
bug 21278.
- Reject version numbers with components that exceed INT32_MAX.
Otherwise 32-bit and 64-bit platforms would behave inconsistently.
Fixes bug 21450; bugfix on 0.0.8pre1.
o Minor features (directory authority):
- Add a new authority-only AuthDirTestEd25519LinkKeys option (on by
default) to control whether authorities should try to probe relays
by their Ed25519 link keys. This option will go away in a few
releases--unless we encounter major trouble in our ed25519 link
protocol rollout, in which case it will serve as a safety option.
o Minor features (directory cache):
- Relays and bridges will now refuse to serve the consensus they
have if they know it is too old for a client to use. Closes
ticket 20511.
o Minor features (ed25519 link handshake):
- Advertise support for the ed25519 link handshake using the
subprotocol-versions mechanism, so that clients can tell which
relays can identity themselves by Ed25519 ID. Closes ticket 20552.
o Minor features (entry guards):
- Add UseEntryGuards to TEST_OPTIONS_DEFAULT_VALUES in order to not
break regression tests.
- Require UseEntryGuards when UseBridges is set, in order to make
sure bridges aren't bypassed. Resolves ticket 20502.
o Minor features (fallback directories):
- Allow 3 fallback relays per operator, which is safe now that we
are choosing 200 fallback relays. Closes ticket 20912.
- Annotate updateFallbackDirs.py with the bandwidth and consensus
weight for each candidate fallback. Closes ticket 20878.
- Display the relay fingerprint when downloading consensuses from
fallbacks. Closes ticket 20908.
- Exclude relays affected by bug 20499 from the fallback list.
Exclude relays from the fallback list if they are running versions
known to be affected by bug 20499, or if in our tests they deliver
a stale consensus (i.e. one that expired more than 24 hours ago).
Closes ticket 20539.
- Make it easier to change the output sort order of fallbacks.
Closes ticket 20822.
- Reduce the minimum fallback bandwidth to 1 MByte/s. Part of
ticket 18828.
- Require fallback directories to have the same address and port for
7 days (now that we have enough relays with this stability).
Relays whose OnionOO stability timer is reset on restart by bug
18050 should upgrade to Tor 0.2.8.7 or later, which has a fix for
this issue. Closes ticket 20880; maintains short-term fix
in 0.2.8.2-alpha.
- Require fallbacks to have flags for 90% of the time (weighted
decaying average), rather than 95%. This allows at least 73% of
clients to bootstrap in the first 5 seconds without contacting an
authority. Part of ticket 18828.
- Select 200 fallback directories for each release. Closes
ticket 20881.
o Minor features (fingerprinting resistence, authentication):
- Extend the length of RSA keys used for TLS link authentication to
2048 bits. (These weren't used for forward secrecy; for forward
secrecy, we used P256.) Closes ticket 13752.
o Minor features (geoip):
- Update geoip and geoip6 to the April 4 2017 Maxmind GeoLite2
Country database.
o Minor features (geoip, also in 0.2.9.9):
- Update geoip and geoip6 to the January 4 2017 Maxmind GeoLite2
Country database.
o Minor features (infrastructure):
- Implement smartlist_add_strdup() function. Replaces the use of
smartlist_add(sl, tor_strdup(str)). Closes ticket 20048.
o Minor features (linting):
- Enhance the changes file linter to warn on Tor versions that are
prefixed with "tor-". Closes ticket 21096.
o Minor features (logging):
- In several places, describe unset ed25519 keys as "<unset>",
rather than the scary "AAAAAAAA...AAA". Closes ticket 21037.
o Minor features (portability, compilation):
- Autoconf now checks to determine if OpenSSL structures are opaque,
instead of explicitly checking for OpenSSL version numbers. Part
of ticket 21359.
- Support building with recent LibreSSL code that uses opaque
structures. Closes ticket 21359.
o Minor features (relay):
- We now allow separation of exit and relay traffic to different
source IP addresses, using the OutboundBindAddressExit and
OutboundBindAddressOR options respectively. Closes ticket 17975.
Written by Michael Sonntag.
o Minor features (reliability, crash):
- Try better to detect problems in buffers where they might grow (or
think they have grown) over 2 GB in size. Diagnostic for
bug 21369.
o Minor features (testing):
- During 'make test-network-all', if tor logs any warnings, ask
chutney to output them. Requires a recent version of chutney with
the 21572 patch. Implements 21570.
o Minor bugfix (control protocol):
- The reply to a "GETINFO config/names" request via the control
protocol now spells the type "Dependent" correctly. This is a
breaking change in the control protocol. (The field seems to be
ignored by the most common known controllers.) Fixes bug 18146;
bugfix on 0.1.1.4-alpha.
- The GETINFO extra-info/digest/<digest> command was broken because
of a wrong base16 decode return value check, introduced when
refactoring that API. Fixes bug 22034; bugfix on 0.2.9.1-alpha.
o Minor bugfix (logging):
- Don't recommend the use of Tor2web in non-anonymous mode.
Recommending Tor2web is a bad idea because the client loses all
anonymity. Tor2web should only be used in specific cases by users
who *know* and understand the issues. Fixes bug 21294; bugfix
on 0.2.9.3-alpha.
o Minor bugfixes (bug resilience):
- Fix an unreachable size_t overflow in base64_decode(). Fixes bug
19222; bugfix on 0.2.0.9-alpha. Found by Guido Vranken; fixed by
Hans Jerry Illikainen.
o Minor bugfixes (build):
- Replace obsolete Autoconf macros with their modern equivalent and
prevent similar issues in the future. Fixes bug 20990; bugfix
on 0.1.0.1-rc.
o Minor bugfixes (certificate expiration time):
- Avoid using link certificates that don't become valid till some
time in the future. Fixes bug 21420; bugfix on 0.2.4.11-alpha
o Minor bugfixes (client):
- Always recover from failures in extend_info_from_node(), in an
attempt to prevent any recurrence of bug 21242. Fixes bug 21372;
bugfix on 0.2.3.1-alpha.
- When clients that use bridges start up with a cached consensus on
disk, they were ignoring it and downloading a new one. Now they
use the cached one. Fixes bug 20269; bugfix on 0.2.3.12-alpha.
o Minor bugfixes (code correctness):
- Repair a couple of (unreachable or harmless) cases of the risky
comparison-by-subtraction pattern that caused bug 21278.
o Minor bugfixes (config):
- Don't assert on startup when trying to get the options list and
LearnCircuitBuildTimeout is set to 0: we are currently parsing the
options so of course they aren't ready yet. Fixes bug 21062;
bugfix on 0.2.9.3-alpha.
o Minor bugfixes (configuration):
- Accept non-space whitespace characters after the severity level in
the `Log` option. Fixes bug 19965; bugfix on 0.2.1.1-alpha.
- Support "TByte" and "TBytes" units in options given in bytes.
"TB", "terabyte(s)", "TBit(s)" and "terabit(s)" were already
supported. Fixes bug 20622; bugfix on 0.2.0.14-alpha.
o Minor bugfixes (configure, autoconf):
- Rename the configure option --enable-expensive-hardening to
--enable-fragile-hardening. Expensive hardening makes the tor
daemon abort when some kinds of issues are detected. Thus, it
makes tor more at risk of remote crashes but safer against RCE or
heartbleed bug category. We now try to explain this issue in a
message from the configure script. Fixes bug 21290; bugfix
on 0.2.5.4-alpha.
o Minor bugfixes (consensus weight):
- Add new consensus method that initializes bw weights to 1 instead
of 0. This prevents a zero weight from making it all the way to
the end (happens in small testing networks) and causing an error.
Fixes bug 14881; bugfix on 0.2.2.17-alpha.
o Minor bugfixes (crash prevention):
- Fix an (currently untriggerable, but potentially dangerous) crash
bug when base32-encoding inputs whose sizes are not a multiple of
5. Fixes bug 21894; bugfix on 0.2.9.1-alpha.
o Minor bugfixes (dead code):
- Remove a redundant check for PidFile changes at runtime in
options_transition_allowed(): this check is already performed
regardless of whether the sandbox is active. Fixes bug 21123;
bugfix on 0.2.5.4-alpha.
o Minor bugfixes (descriptors):
- Correctly recognise downloaded full descriptors as valid, even
when using microdescriptors as circuits. This affects clients with
FetchUselessDescriptors set, and may affect directory authorities.
Fixes bug 20839; bugfix on 0.2.3.2-alpha.
o Minor bugfixes (directory mirrors):
- Allow relays to use directory mirrors without a DirPort: these
relays need to be contacted over their ORPorts using a begindir
connection. Fixes one case of bug 20711; bugfix on 0.2.8.2-alpha.
- Clarify the message logged when a remote relay is unexpectedly
missing an ORPort or DirPort: users were confusing this with a
local port. Fixes another case of bug 20711; bugfix
on 0.2.8.2-alpha.
o Minor bugfixes (directory system):
- Bridges and relays now use microdescriptors (like clients do)
rather than old-style router descriptors. Now bridges will blend
in with clients in terms of the circuits they build. Fixes bug
6769; bugfix on 0.2.3.2-alpha.
- Download all consensus flavors, descriptors, and authority
certificates when FetchUselessDescriptors is set, regardless of
whether tor is a directory cache or not. Fixes bug 20667; bugfix
on all recent tor versions.
o Minor bugfixes (documentation):
- Update the tor manual page to document every option that can not
be changed while tor is running. Fixes bug 21122.
o Minor bugfixes (ed25519 certificates):
- Correctly interpret ed25519 certificates that would expire some
time after 19 Jan 2038. Fixes bug 20027; bugfix on 0.2.7.2-alpha.
o Minor bugfixes (fallback directories):
- Avoid checking fallback candidates' DirPorts if they are down in
OnionOO. When a relay operator has multiple relays, this
prioritizes relays that are up over relays that are down. Fixes
bug 20926; bugfix on 0.2.8.3-alpha.
- Stop failing when OUTPUT_COMMENTS is True in updateFallbackDirs.py.
Fixes bug 20877; bugfix on 0.2.8.3-alpha.
- Stop failing when a relay has no uptime data in
updateFallbackDirs.py. Fixes bug 20945; bugfix on 0.2.8.1-alpha.
o Minor bugfixes (hidden service):
- Clean up the code for expiring intro points with no associated
circuits. It was causing, rarely, a service with some expiring
introduction points to not open enough additional introduction
points. Fixes part of bug 21302; bugfix on 0.2.7.2-alpha.
- Resolve two possible underflows which could lead to creating and
closing a lot of introduction point circuits in a non-stop loop.
Fixes bug 21302; bugfix on 0.2.7.2-alpha.
- Stop setting the torrc option HiddenServiceStatistics to "0" just
because we're not a bridge or relay. Instead, we preserve whatever
value the user set (or didn't set). Fixes bug 21150; bugfix
on 0.2.6.2-alpha.
o Minor bugfixes (hidden services):
- Make hidden services check for failed intro point connections,
even when they have exceeded their intro point creation limit.
Fixes bug 21596; bugfix on 0.2.7.2-alpha. Reported by Alec Muffett.
- Make hidden services with 8 to 10 introduction points check for
failed circuits immediately after startup. Previously, they would
wait for 5 minutes before performing their first checks. Fixes bug
21594; bugfix on 0.2.3.9-alpha. Reported by Alec Muffett.
- Stop ignoring misconfigured hidden services. Instead, refuse to
start tor until the misconfigurations have been corrected. Fixes
bug 20559; bugfix on multiple commits in 0.2.7.1-alpha
and earlier.
o Minor bugfixes (IPv6):
- Make IPv6-using clients try harder to find an IPv6 directory
server. Fixes bug 20999; bugfix on 0.2.8.2-alpha.
- When IPv6 addresses have not been downloaded yet (microdesc
consensus documents don't list relay IPv6 addresses), use hard-
coded addresses for authorities, fallbacks, and configured
bridges. Now IPv6-only clients can use microdescriptors. Fixes bug
20996; bugfix on b167e82 from 19608 in 0.2.8.5-alpha.
o Minor bugfixes (memory leak at exit):
- Fix a small harmless memory leak at exit of the previously unused
RSA->Ed identity cross-certificate. Fixes bug 17779; bugfix
on 0.2.7.2-alpha.
o Minor bugfixes (onion services):
- Allow the number of introduction points to be as low as 0, rather
than as low as 3. Fixes bug 21033; bugfix on 0.2.7.2-alpha.
o Minor bugfixes (portability):
- Use "OpenBSD" compiler macro instead of "OPENBSD" or "__OpenBSD__".
It is supported by OpenBSD itself, and also by most OpenBSD
variants (such as Bitrig). Fixes bug 20980; bugfix
on 0.1.2.1-alpha.
o Minor bugfixes (portability, also in 0.2.9.9):
- Avoid crashing when Tor is built using headers that contain
CLOCK_MONOTONIC_COARSE, but then tries to run on an older kernel
without CLOCK_MONOTONIC_COARSE. Fixes bug 21035; bugfix
on 0.2.9.1-alpha.
- Fix Libevent detection on platforms without Libevent 1 headers
installed. Fixes bug 21051; bugfix on 0.2.9.1-alpha.
o Minor bugfixes (relay):
- Avoid a double-marked-circuit warning that could happen when we
receive DESTROY cells under heavy load. Fixes bug 20059; bugfix
on 0.1.0.1-rc.
- Honor DataDirectoryGroupReadable when tor is a relay. Previously,
initializing the keys would reset the DataDirectory to 0700
instead of 0750 even if DataDirectoryGroupReadable was set to 1.
Fixes bug 19953; bugfix on 0.0.2pre16. Patch by "redfish".
o Minor bugfixes (testing):
- Fix Raspbian build issues related to missing socket errno in
test_util.c. Fixes bug 21116; bugfix on 0.2.8.2. Patch by "hein".
- Remove undefined behavior from the backtrace generator by removing
its signal handler. Fixes bug 21026; bugfix on 0.2.5.2-alpha.
- Use bash in src/test/test-network.sh. This ensures we reliably
call chutney's newer tools/test-network.sh when available. Fixes
bug 21562; bugfix on 0.2.9.1-alpha.
o Minor bugfixes (tor-resolve):
- The tor-resolve command line tool now rejects hostnames over 255
characters in length. Previously, it would silently truncate them,
which could lead to bugs. Fixes bug 21280; bugfix on 0.0.9pre5.
Patch by "junglefowl".
o Minor bugfixes (unit tests):
- Allow the unit tests to pass even when DNS lookups of bogus
addresses do not fail as expected. Fixes bug 20862 and 20863;
bugfix on unit tests introduced in 0.2.8.1-alpha
through 0.2.9.4-alpha.
o Minor bugfixes (util):
- When finishing writing a file to disk, if we were about to replace
the file with the temporary file created before and we fail to
replace it, remove the temporary file so it doesn't stay on disk.
Fixes bug 20646; bugfix on 0.2.0.7-alpha. Patch by fk.
o Minor bugfixes (Windows services):
- Be sure to initialize the monotonic time subsystem before using
it, even when running as an NT service. Fixes bug 21356; bugfix
on 0.2.9.1-alpha.
o Minor bugfixes (Windows):
- Check for getpagesize before using it to mmap files. This fixes
compilation in some MinGW environments. Fixes bug 20530; bugfix on
0.1.2.1-alpha. Reported by "ice".
o Code simplification and refactoring:
- Abolish all global guard context in entrynodes.c; replace with new
guard_selection_t structure as preparation for proposal 271.
Closes ticket 19858.
- Extract magic numbers in circuituse.c into defined variables.
- Introduce rend_service_is_ephemeral() that tells if given onion
service is ephemeral. Replace unclear NULL-checkings for service
directory with this function. Closes ticket 20526.
- Refactor circuit_is_available_for_use to remove unnecessary check.
- Refactor circuit_predict_and_launch_new for readability and
testability. Closes ticket 18873.
- Refactor code to manipulate global_origin_circuit_list into
separate functions. Closes ticket 20921.
- Refactor large if statement in purpose_needs_anonymity to use
switch statement instead. Closes part of ticket 20077.
- Refactor the hashing API to return negative values for errors, as
is done as throughout the codebase. Closes ticket 20717.
- Remove data structures that were used to index or_connection
objects by their RSA identity digests. These structures are fully
redundant with the similar structures used in the
channel abstraction.
- Remove duplicate code in the channel_write_*cell() functions.
Closes ticket 13827; patch from Pingl.
- Remove redundant behavior of is_sensitive_dir_purpose, refactor to
use only purpose_needs_anonymity. Closes part of ticket 20077.
- The code to generate and parse EXTEND and EXTEND2 cells has been
replaced with code automatically generated by the
"trunnel" utility.
o Documentation (formatting):
- Clean up formatting of tor.1 man page and HTML doc, where <pre>
blocks were incorrectly appearing. Closes ticket 20885.
o Documentation (man page):
- Clarify many options in tor.1 and add some min/max values for
HiddenService options. Closes ticket 21058.
o Documentation:
- Change '1' to 'weight_scale' in consensus bw weights calculation
comments, as that is reality. Closes ticket 20273. Patch
from pastly.
- Clarify that when ClientRejectInternalAddresses is enabled (which
is the default), multicast DNS hostnames for machines on the local
network (of the form *.local) are also rejected. Closes
ticket 17070.
- Correct the value for AuthDirGuardBWGuarantee in the manpage, from
250 KBytes to 2 MBytes. Fixes bug 20435; bugfix on 0.2.5.6-alpha.
- Include the "TBits" unit in Tor's man page. Fixes part of bug
20622; bugfix on 0.2.5.1-alpha.
- Small fixes to the fuzzing documentation. Closes ticket 21472.
- Stop the man page from incorrectly stating that HiddenServiceDir
must already exist. Fixes 20486.
- Update the description of the directory server options in the
manual page, to clarify that a relay no longer needs to set
DirPort in order to be a directory cache. Closes ticket 21720.
o Removed features:
- The AuthDirMaxServersPerAuthAddr option no longer exists: The same
limit for relays running on a single IP applies to authority IP
addresses as well as to non-authority IP addresses. Closes
ticket 20960.
- The UseDirectoryGuards torrc option no longer exists: all users
that use entry guards will also use directory guards. Related to
proposal 271; implements part of ticket 20831.
o Testing:
- Add tests for networkstatus_compute_bw_weights_v10.
- Add unit tests circuit_predict_and_launch_new.
- Extract dummy_origin_circuit_new so it can be used by other
test functions.
- New unit tests for tor_htonll(). Closes ticket 19563. Patch
from "overcaffeinated".
- Perform the coding style checks when running the tests and fail
when coding style violations are found. Closes ticket 5500.
1
0
Tor Browser 6.5.2 is now available from the Tor Browser Project page [1]
and also from our distribution directory [2].
1: https://www.torproject.org/download/download-easy.html
2: https://www.torproject.org/dist/torbrowser/6.5.2/
This release features important security updates [3] to Firefox.
3: https://www.mozilla.org/en-US/security/advisories/mfsa2017-11/
This should be the last minor release in the 6.5 series. This release
updates Firefox to 45.9.0esr, Noscript to 5.0.2, and HTTPS-Everywhere
to 5.2.14.
Moreover, we included a fix for the broken Twitter experience and worked
around a Windows related crash bug. To improve our censorship resistance
we additionally updated the bridges we ship.
Here is the full changelog since 6.5.1:
* All Platforms
* Update Firefox to 45.9.0esr
* Update HTTPS-Everywhere to 5.2.14
* Update NoScript to 5.0.2
* Bug 21555+16450: Don't remove Authorization header on subdomains (e.g. Twitter)
* Bug 19316: Make sure our Windows updates can deal with the SSE2 requirement
* Bug 21917: Add new obfs4 bridges
* Bug 21918: Move meek-amazon to d2cly7j4zqgua7.cloudfront.net backend
* Windows
* Bug 21795: Fix Tor Browser crashing on github.com
1
0
Tor Browser 6.5.1 is now available from the Tor Browser Project page [1]
and also from our distribution directory [2].
1: https://www.torproject.org/download/download-easy.html
2: https://www.torproject.org/dist/torbrowser/6.5.1/
This release features important security updates [3] to Firefox.
3: https://www.mozilla.org/en-US/security/advisories/mfsa2017-06/
This is the first minor release in the 6.5 series and it mainly contains
updates to several of our Tor Browser components: Firefox got updated
to 45.8.0esr, Tor to 0.2.9.10, OpenSSL to 1.0.1k, and HTTPS-Everywhere
to 5.2.11.
Additionally, we updated the bridges we ship with Tor Browser and fixed
some regressions that came with our last release.
In Tor Browser 6.5 we introduced filtering of content requests to
resource:// and chrome:// URIs [4] in order to neuter a fingerprinting
vector. This change however breaks the Session Manager addon [5]. Users
who think having extensions like that one working is much more important
than avoiding the possible information leakage associated with that can
now toggle the 'extensions.torbutton.resource_and_chrome_uri_fingerprinting'
preference, setting it to 'true' to disable our defense against this
type of fingerprinting.
4: https://trac.torproject.org/projects/tor/ticket/8725
5: https://trac.torproject.org/projects/tor/ticket/21396
An other regression introduced in Tor Browser 6.5 is the resizing of
the window [6]. We are currently working on a fix for this issue.
6: https://trac.torproject.org/projects/tor/ticket/20905
Here is the full changelog since 6.5:
* All Platforms
* Update Firefox to 45.8.0esr
* Tor to 0.2.9.10
* OpenSSL to 1.0.2k
* Update Torbutton to 1.9.6.14
* Bug 21396: Allow leaking of resource/chrome URIs (off by default)
* Bug 21574: Add link for zh manual and create manual links dynamically
* Bug 21330: Non-usable scrollbar appears in tor browser security settings
* Translation updates
* Update HTTPS-Everywhere to 5.2.11
* Bug 21514: Restore W^X JIT implementation removed from ESR45
* Bug 21536: Remove scramblesuit bridge
* Bug 21342: Move meek-azure to the meek.azureedge.net backend and cymrubridge02 bridge
* Linux
* Bug 21326: Update the "Using a system-installed Tor" section in start script
1
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You can download the source code from https://dist.torproject.org/
but most users should wait for the upcoming Tor Browser release, or
for their upcoming system package updates.
(0.3.0.4-rc also came out today, but non-stable releases get announced
on tor-talk.)
Changes in version 0.2.9.10 - 2017-03-01
Tor 0.2.9.10 backports a security fix from a later Tor release. It also
includes fixes for some major issues affecting directory authorities,
LibreSSL compatibility, and IPv6 correctness.
The Tor 0.2.9.x release series is now marked as a long-term-support
series. We intend to backport security fixes to 0.2.9.x until at
least January of 2020.
o Major bugfixes (directory authority, 0.3.0.3-alpha):
- During voting, when marking a relay as a probable sybil, do not
clear its BadExit flag: sybils can still be bad in other ways
too. (We still clear the other flags.) Fixes bug 21108; bugfix
on 0.2.0.13-alpha.
o Major bugfixes (IPv6 Exits, backport from 0.3.0.3-alpha):
- Stop rejecting all IPv6 traffic on Exits whose exit policy rejects
any IPv6 addresses. Instead, only reject a port over IPv6 if the
exit policy rejects that port on more than an IPv6 /16 of
addresses. This bug was made worse by 17027 in 0.2.8.1-alpha,
which rejected a relay's own IPv6 address by default. Fixes bug
21357; bugfix on commit 004f3f4e53 in 0.2.4.7-alpha.
o Major bugfixes (parsing, also in 0.3.0.4-rc):
- Fix an integer underflow bug when comparing malformed Tor
versions. This bug could crash Tor when built with
--enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
0.2.9.8, which were built with -ftrapv by default. In other cases
it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
on 0.0.8pre1. Found by OSS-Fuzz.
o Minor features (directory authorities, also in 0.3.0.4-rc):
- Directory authorities now reject descriptors that claim to be
malformed versions of Tor. Helps prevent exploitation of
bug 21278.
- Reject version numbers with components that exceed INT32_MAX.
Otherwise 32-bit and 64-bit platforms would behave inconsistently.
Fixes bug 21450; bugfix on 0.0.8pre1.
o Minor features (geoip):
- Update geoip and geoip6 to the February 8 2017 Maxmind GeoLite2
Country database.
o Minor features (portability, compilation, backport from 0.3.0.3-alpha):
- Autoconf now checks to determine if OpenSSL structures are opaque,
instead of explicitly checking for OpenSSL version numbers. Part
of ticket 21359.
- Support building with recent LibreSSL code that uses opaque
structures. Closes ticket 21359.
o Minor bugfixes (code correctness, also in 0.3.0.4-rc):
- Repair a couple of (unreachable or harmless) cases of the risky
comparison-by-subtraction pattern that caused bug 21278.
o Minor bugfixes (tor-resolve, backport from 0.3.0.3-alpha):
- The tor-resolve command line tool now rejects hostnames over 255
characters in length. Previously, it would silently truncate them,
which could lead to bugs. Fixes bug 21280; bugfix on 0.0.9pre5.
Patch by "junglefowl".
1
0
Tor Browser 6.5 is now available from the Tor Browser Project page [1]
and also from our distribution directory [2].
1: https://www.torproject.org/download/download-easy.html
2: https://www.torproject.org/dist/torbrowser/6.5/
This release features important security updates [3] to Firefox.
3: https://www.mozilla.org/en-US/security/advisories/mfsa2017-02/
This is a major release and the first one in the 6.5 series. First of
all it fixes the usual critical bugs in Firefox by updating to ESR
45.7.0. It contains version updates to other bundle components as well:
Tor to 0.2.9.9, OpenSSL to 1.0.2j, HTTPS-Everywhere to 5.2.9, and
NoScript to 2.9.5.3.
Besides those updates Tor Browser 6.5 ships with a lot of the
improvements we have been working on in the past couple of months.
On the security side we always block remote JAR files [4] now and
remove the support for SHA-1 HPKP pins [5]. Additionally we backported
from an other firefox branch patches to mark JIT pages as non-writable
and other crash fixes that could disrupt a Tor Browser session quite
reliably.
4: https://trac.torproject.org/projects/tor/ticket/20123
5: https://trac.torproject.org/projects/tor/ticket/19164
With respect to user tracking and fingerprinting we now isolate
SharedWorker script requests to the first party domain. We improved our
timer resolution spoofing and reduced the timing precision for
AudioContext, HTMLMediaElement, and Mediastream elements. We stopped
user fingerprinting via internal resource:// URLs, and for Windows
users we fixed a regression introduced in Tor Browser 6.0 which could
leak the local timezone if JavaScript were enabled.
A great deal of our time was spent on improving the usability of
Tor Browser. We redesigned the security slider and improved its labels.
We moved a lot of Torbutton's privacy settings directly into the
respective Firefox menu making it cleaner and more straightforward to
use. Finally, we moved as many Torbutton features as possible into
Firefox to make it easier for upstreaming them. This allowed us to
resolve a couple of window resizing bugs that piled on over the course
of the past years.
The features mentioned above are only some of the highlights in
Tor Browser 6.5. The full changelog since 6.0.8 is:
* All Platforms
* Update Firefox to 45.7.0esr
* Tor to 0.2.9.9
* OpenSSL to 1.0.2j
* Update Torbutton to 1.9.6.12
* Bug 16622: Timezone spoofing moved to tor-browser.git
* Bug 17334: Move referrer spoofing for .onion domains into tor-browser.git
* Bug 8725: Block addon resource and url fingerprinting with nsIContentPolicy
* Bug 20701: Allow the directory listing stylesheet in the content policy
* Bug 19837: Whitelist internal URLs that Firefox requires for media
* Bug 19206: Avoid SOCKS auth and NEWNYM collisions when sharing a tor client
* Bug 19273: Improve external app launch handling and associated warnings
* Bug 15852: Remove/synchronize Torbutton SOCKS pref logic
* Bug 19733: GETINFO response parser doesn't handle AF_UNIX entries + IPv6
* Bug 17767: Make "JavaScript disabled" more visible in Security Slider
* Bug 20556: Use pt-BR strings from now on
* Bug 20614: Add links to Tor Browser User Manual
* Bug 20414: Fix non-rendering arrow on OS X
* Bug 20728: Fix bad preferences.xul dimensions
* Bug 19898: Use DuckDuckGo on about:tor
* Bug 21091: Hide the update check menu entry when running under the sandbox
* Bug 19459: Move resizing code to tor-browser.git
* Bug 20264: Change security slider to 3 options
* Bug 20347: Enhance security slider's custom mode
* Bug 20123: Disable remote jar on all security levels
* Bug 20244: Move privacy checkboxes to about:preferences#privacy
* Bug 17546: Add tooltips to explain our privacy checkboxes
* Bug 17904: Allow security settings dialog to resize
* Bug 18093: Remove 'Restore Defaults' button
* Bug 20373: Prevent redundant dialogs opening
* Bug 20318: Remove helpdesk link from about:tor
* Bug 21243: Add links for pt, es, and fr Tor Browser manuals
* Bug 20753: Remove obsolete StartPage locale strings
* Bug 21131: Remove 2016 donation banner
* Bug 18980: Remove obsolete toolbar button code
* Bug 18238: Remove unused Torbutton code and strings
* Bug 20388+20399+20394: Code clean-up
* Translation updates
* Update Tor Launcher to 0.2.10.3
* Bug 19568: Set CurProcD for Thunderbird/Instantbird
* Bug 19432: Remove special handling for Instantbird/Thunderbird
* Translation updates
* Update HTTPS-Everywhere to 5.2.9
* Update NoScript to 2.9.5.3
* Bug 16622: Spoof timezone with Firefox patch
* Bug 17334: Spoof referrer when leaving a .onion domain
* Bug 19273: Write C++ patch for external app launch handling
* Bug 19459: Size new windows to 1000x1000 or nearest 200x100 (Firefox patch)
* Bug 12523: Mark JIT pages as non-writable
* Bug 20123: Always block remote jar files
* Bug 19193: Reduce timing precision for AudioContext, HTMLMediaElement, and MediaStream
* Bug 19164: Remove support for SHA-1 HPKP pins
* Bug 19186: KeyboardEvents are only rounding to 100ms
* Bug 16998: Isolate preconnect requests to URL bar domain
* Bug 19478: Prevent millisecond resolution leaks in File API
* Bug 20471: Allow javascript: links from HTTPS first party pages
* Bug 20244: Move privacy checkboxes to about:preferences#privacy
* Bug 20707: Fix broken preferences tab in non-en-US alpha bundles
* Bug 20709: Fix wrong update URL in alpha bundles
* Bug 19481: Point the update URL to aus1.torproject.org
* Bug 20556: Start using pt-BR instead of pt-PT for Portuguese
* Bug 20442: Backport fix for local path disclosure after drag and drop
* Bug 20160: Backport fix for broken MP3-playback
* Bug 20043: Isolate SharedWorker script requests to first party
* Bug 18923: Add script to run all Tor Browser regression tests
* Bug 20651: DuckDuckGo does not work with JavaScript disabled
* Bug 19336+19835: Enhance about:tbupdate page
* Bug 20399+15852: Code clean-up
* Windows
* Bug 20981: On Windows, check TZ for timezone first
* Bug 18175: Maximizing window and restarting leads to non-rounded window size
* Bug 13437: Rounded inner window accidentally grows to non-rounded size
* OS X
* Bug 20590: Badly resized window due to security slider notification bar on OS X
* Bug 20439: Make the build PIE on OSX
* Linux
* Bug 20691: Updater breaks if unix domain sockets are used
* Bug 15953: Weird resizing dance on Tor Browser startup
* Build system
* All platforms
* Bug 20927: Upgrade Go to 1.7.4
* Bug 20583: Make the downloads.json file reproducible
* Bug 20133: Don't apply OpenSSL patch anymore
* Bug 19528: Set MOZ_BUILD_DATE based on Firefox version
* Bug 18291: Remove some uses of libfaketime
* Bug 18845: Make zip and tar helpers generate reproducible archives
* OS X
* Bug 20258: Make OS X Tor archive reproducible again
* Bug 20184: Make OS X builds reproducible (use clang for compiling tor)
* Bug 19856: Make OS X builds reproducible (getting libfaketime back)
* Bug 19410: Fix incremental updates by taking signatures into account
* Bug 20210: In dmg2mar, extract old mar file to copy permissions to the new one
1
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Tor 0.2.9.9 fixes a denial-of-service bug where an attacker could
cause relays and clients to crash, even if they were not built with
the --enable-expensive-hardening option. This bug affects all 0.2.9.x
versions, and also affects 0.3.0.1-alpha: all relays running an affected
version should upgrade.
This release also resolves a client-side onion service reachability bug,
and resolves a pair of small portability issues.
You can download the source code from https://dist.torproject.org/
but most users should wait for the upcoming Tor Browser release, or
for their upcoming system package updates.
Changes in version 0.2.9.9 - 2017-01-23
o Major bugfixes (security):
- Downgrade the "-ftrapv" option from "always on" to "only on when
--enable-expensive-hardening is provided." This hardening option,
like others, can turn survivable bugs into crashes -- and having
it on by default made a (relatively harmless) integer overflow bug
into a denial-of-service bug. Fixes bug 21278 (TROVE-2017-001);
bugfix on 0.2.9.1-alpha.
o Major bugfixes (client, onion service):
- Fix a client-side onion service reachability bug, where multiple
socks requests to an onion service (or a single slow request)
could cause us to mistakenly mark some of the service's
introduction points as failed, and we cache that failure so
eventually we run out and can't reach the service. Also resolves a
mysterious "Remote server sent bogus reason code 65021" log
warning. The bug was introduced in ticket 17218, where we tried to
remember the circuit end reason as a uint16_t, which mangled
negative values. Partially fixes bug 21056 and fixes bug 20307;
bugfix on 0.2.8.1-alpha.
o Minor features (geoip):
- Update geoip and geoip6 to the January 4 2017 Maxmind GeoLite2
Country database.
o Minor bugfixes (portability):
- Avoid crashing when Tor is built using headers that contain
CLOCK_MONOTONIC_COARSE, but then tries to run on an older kernel
without CLOCK_MONOTONIC_COARSE. Fixes bug 21035; bugfix
on 0.2.9.1-alpha.
- Fix Libevent detection on platforms without Libevent 1 headers
installed. Fixes bug 21051; bugfix on 0.2.9.1-alpha.
1
0
Hi, all! In addition to today's release of a stable 0.2.9, there's
also a new Tor 0.2.8.12 source release. This release backports a fix
for bug 21018, a medium-severity denial-of-service issue affecting
clients that visit hidden services. See notes on 21018 below for
more information.
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Since 0.2.8 is no longer the most recent stable release, you can
download the source from https://dist.torproject.org/ .
============================================================
Changes in version 0.2.8.12 - 2016-12-19
Tor 0.2.8.12 backports a fix for a medium-severity issue (bug 21018
below) where Tor clients could crash when attempting to visit a
hostile hidden service. Clients are recommended to upgrade as packages
become available for their systems.
It also includes an updated list of fallback directories, backported
from 0.2.9.
Now that the Tor 0.2.9 series is stable, only major bugfixes will be
backported to 0.2.8 in the future.
o Major bugfixes (parsing, security, backported from 0.2.9.8):
- Fix a bug in parsing that could cause clients to read a single
byte past the end of an allocated region. This bug could be used
to cause hardened clients (built with --enable-expensive-hardening)
to crash if they tried to visit a hostile hidden service. Non-
hardened clients are only affected depending on the details of
their platform's memory allocator. Fixes bug 21018; bugfix on
0.2.0.8-alpha. Found by using libFuzzer. Also tracked as TROVE-
2016-12-002 and as CVE-2016-1254.
o Minor features (fallback directory list, backported from 0.2.9.8):
- Replace the 81 remaining fallbacks of the 100 originally
introduced in Tor 0.2.8.3-alpha in March 2016, with a list of 177
fallbacks (123 new, 54 existing, 27 removed) generated in December
2016. Resolves ticket 20170.
o Minor features (geoip, backported from 0.2.9.7-rc):
- Update geoip and geoip6 to the December 7 2016 Maxmind GeoLite2
Country database.
1
0
Hi, all! After months of work, a new Tor release series is finally
stable.
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You will have to enter the actual email address you used to
subscribe.)
(This release also includes a fix for bug 21018, a medium-severity
denial-of-service issue affecting clients that visit hidden
services. A new Tor 0.2.8.x release will also be out soon. See
notes on 21018 below for more information.)
You can download the source code from the usual place on the
website. Packages should be up within the next few days, with a
TorBrowser release planned for early January.
============================================================
Changes in version 0.2.9.8 - 2016-12-19
Tor 0.2.9.8 is the first stable release of the Tor 0.2.9 series.
The Tor 0.2.9 series makes mandatory a number of security features
that were formerly optional. It includes support for a new shared-
randomness protocol that will form the basis for next generation
hidden services, includes a single-hop hidden service mode for
optimizing .onion services that don't actually want to be hidden,
tries harder not to overload the directory authorities with excessive
downloads, and supports a better protocol versioning scheme for
improved compatibility with other implementations of the Tor protocol.
And of course, there are numerous other bugfixes and improvements.
This release also includes a fix for a medium-severity issue (bug
21018 below) where Tor clients could crash when attempting to visit a
hostile hidden service. Clients are recommended to upgrade as packages
become available for their systems.
Below are listed the changes since Tor 0.2.8.11. For a list of
changes since 0.2.9.7-rc, see the ChangeLog file.
o New system requirements:
- When building with OpenSSL, Tor now requires version 1.0.1 or
later. OpenSSL 1.0.0 and earlier are no longer supported by the
OpenSSL team, and should not be used. Closes ticket 20303.
- Tor now requires Libevent version 2.0.10-stable or later. Older
versions of Libevent have less efficient backends for several
platforms, and lack the DNS code that we use for our server-side
DNS support. This implements ticket 19554.
- Tor now requires zlib version 1.2 or later, for security,
efficiency, and (eventually) gzip support. (Back when we started,
zlib 1.1 and zlib 1.0 were still found in the wild. 1.2 was
released in 2003. We recommend the latest version.)
o Deprecated features:
- A number of DNS-cache-related sub-options for client ports are now
deprecated for security reasons, and may be removed in a future
version of Tor. (We believe that client-side DNS caching is a bad
idea for anonymity, and you should not turn it on.) The options
are: CacheDNS, CacheIPv4DNS, CacheIPv6DNS, UseDNSCache,
UseIPv4Cache, and UseIPv6Cache.
- A number of options are deprecated for security reasons, and may
be removed in a future version of Tor. The options are:
AllowDotExit, AllowInvalidNodes, AllowSingleHopCircuits,
AllowSingleHopExits, ClientDNSRejectInternalAddresses,
CloseHSClientCircuitsImmediatelyOnTimeout,
CloseHSServiceRendCircuitsImmediatelyOnTimeout,
ExcludeSingleHopRelays, FastFirstHopPK, TLSECGroup,
UseNTorHandshake, and WarnUnsafeSocks.
- The *ListenAddress options are now deprecated as unnecessary: the
corresponding *Port options should be used instead. These options
may someday be removed. The affected options are:
ControlListenAddress, DNSListenAddress, DirListenAddress,
NATDListenAddress, ORListenAddress, SocksListenAddress,
and TransListenAddress.
o Major bugfixes (parsing, security, new since 0.2.9.7-rc):
- Fix a bug in parsing that could cause clients to read a single
byte past the end of an allocated region. This bug could be used
to cause hardened clients (built with --enable-expensive-hardening)
to crash if they tried to visit a hostile hidden service. Non-
hardened clients are only affected depending on the details of
their platform's memory allocator. Fixes bug 21018; bugfix on
0.2.0.8-alpha. Found by using libFuzzer. Also tracked as TROVE-
2016-12-002 and as CVE-2016-1254.
o Major features (build, hardening):
- Tor now builds with -ftrapv by default on compilers that support
it. This option detects signed integer overflow (which C forbids),
and turns it into a hard-failure. We do not apply this option to
code that needs to run in constant time to avoid side-channels;
instead, we use -fwrapv in that code. Closes ticket 17983.
- When --enable-expensive-hardening is selected, stop applying the
clang/gcc sanitizers to code that needs to run in constant time.
Although we are aware of no introduced side-channels, we are not
able to prove that there are none. Related to ticket 17983.
o Major features (circuit building, security):
- Authorities, relays, and clients now require ntor keys in all
descriptors, for all hops (except for rare hidden service protocol
cases), for all circuits, and for all other roles. Part of
ticket 19163.
- Authorities, relays, and clients only use ntor, except for
rare cases in the hidden service protocol. Part of ticket 19163.
o Major features (compilation):
- Our big list of extra GCC warnings is now enabled by default when
building with GCC (or with anything like Clang that claims to be
GCC-compatible). To make all warnings into fatal compilation
errors, pass --enable-fatal-warnings to configure. Closes
ticket 19044.
- Use the Autoconf macro AC_USE_SYSTEM_EXTENSIONS to automatically
turn on C and POSIX extensions. (Previously, we attempted to do
this on an ad hoc basis.) Closes ticket 19139.
o Major features (directory authorities, hidden services):
- Directory authorities can now perform the shared randomness
protocol specified by proposal 250. Using this protocol, directory
authorities generate a global fresh random value every day. In the
future, this value will be used by hidden services to select
HSDirs. This release implements the directory authority feature;
the hidden service side will be implemented in the future as part
of proposal 224. Resolves ticket 16943; implements proposal 250.
o Major features (downloading, random exponential backoff):
- When we fail to download an object from a directory service, wait
for an (exponentially increasing) randomized amount of time before
retrying, rather than a fixed interval as we did before. This
prevents a group of Tor instances from becoming too synchronized,
or a single Tor instance from becoming too predictable, in its
download schedule. Closes ticket 15942.
o Major features (resource management):
- Tor can now notice it is about to run out of sockets, and
preemptively close connections of lower priority. (This feature is
off by default for now, since the current prioritizing method is
yet not mature enough. You can enable it by setting
"DisableOOSCheck 0", but watch out: it might close some sockets
you would rather have it keep.) Closes ticket 18640.
o Major features (single-hop "hidden" services):
- Add experimental HiddenServiceSingleHopMode and
HiddenServiceNonAnonymousMode options. When both are set to 1,
every hidden service on that Tor instance becomes a non-anonymous
Single Onion Service. Single Onions make one-hop (direct)
connections to their introduction and rendezvous points. One-hop
circuits make Single Onion servers easily locatable, but clients
remain location-anonymous. This is compatible with the existing
hidden service implementation, and works on the current Tor
network without any changes to older relays or clients. Implements
proposal 260, completes ticket 17178. Patch by teor and asn.
o Major features (subprotocol versions):
- Tor directory authorities now vote on a set of recommended
"subprotocol versions", and on a set of required subprotocol
versions. Clients and relays that lack support for a _required_
subprotocol version will not start; those that lack support for a
_recommended_ subprotocol version will warn the user to upgrade.
This change allows compatible implementations of the Tor protocol(s)
to exist without pretending to be 100% bug-compatible with
particular releases of Tor itself. Closes ticket 19958; implements
part of proposal 264.
o Major bugfixes (circuit building):
- Hidden service client-to-intro-point and service-to-rendezvous-
point circuits use the TAP key supplied by the protocol, to avoid
epistemic attacks. Fixes bug 19163; bugfix on 0.2.4.18-rc.
o Major bugfixes (download scheduling):
- Avoid resetting download status for consensuses hourly, since we
already have another, smarter retry mechanism. Fixes bug 8625;
bugfix on 0.2.0.9-alpha.
- If a consensus expires while we are waiting for certificates to
download, stop waiting for certificates.
- If we stop waiting for certificates less than a minute after we
started downloading them, do not consider the certificate download
failure a separate failure. Fixes bug 20533; bugfix
on 0.2.0.9-alpha.
- When using exponential backoff in test networks, use a lower
exponent, so the delays do not vary as much. This helps test
networks bootstrap consistently. Fixes bug 20597; bugfix on 20499.
o Major bugfixes (exit policies):
- Avoid disclosing exit outbound bind addresses, configured port
bind addresses, and local interface addresses in relay descriptors
by default under ExitPolicyRejectPrivate. Instead, only reject
these (otherwise unlisted) addresses if
ExitPolicyRejectLocalInterfaces is set. Fixes bug 18456; bugfix on
0.2.7.2-alpha. Patch by teor.
o Major bugfixes (hidden services):
- Allow Tor clients with appropriate controllers to work with
FetchHidServDescriptors set to 0. Previously, this option also
disabled descriptor cache lookup, thus breaking hidden services
entirely. Fixes bug 18704; bugfix on 0.2.0.20-rc. Patch by "twim".
- Clients now require hidden services to include the TAP keys for
their intro points in the hidden service descriptor. This prevents
an inadvertent upgrade to ntor, which a malicious hidden service
could use to distinguish clients by consensus version. Fixes bug
20012; bugfix on 0.2.4.8-alpha. Patch by teor.
o Major bugfixes (relay, resolver, logging):
- For relays that don't know their own address, avoid attempting a
local hostname resolve for each descriptor we download. This
will cut down on the number of "Success: chose address 'x.x.x.x'"
log lines, and also avoid confusing clock jumps if the resolver
is slow. Fixes bugs 20423 and 20610; bugfix on 0.2.8.1-alpha.
o Minor features (port flags):
- Add new flags to the *Port options to give finer control over which
requests are allowed. The flags are NoDNSRequest, NoOnionTraffic,
and the synthetic flag OnionTrafficOnly, which is equivalent to
NoDNSRequest, NoIPv4Traffic, and NoIPv6Traffic. Closes enhancement
18693; patch by "teor".
o Minor features (build, hardening):
- Detect and work around a libclang_rt problem that would prevent
clang from finding __mulodi4() on some 32-bit platforms, and thus
keep -ftrapv from linking on those systems. Closes ticket 19079.
- When building on a system without runtime support for the runtime
hardening options, try to log a useful warning at configuration
time, rather than an incomprehensible warning at link time. If
expensive hardening was requested, this warning becomes an error.
Closes ticket 18895.
o Minor features (client, directory):
- Since authorities now omit all routers that lack the Running and
Valid flags, we assume that any relay listed in the consensus must
have those flags. Closes ticket 20001; implements part of
proposal 272.
o Minor features (code safety):
- In our integer-parsing functions, ensure that the maximum value we
allow is no smaller than the minimum value. Closes ticket 19063;
patch from "U+039b".
o Minor features (compilation, portability):
- Compile correctly on MacOS 10.12 (aka "Sierra"). Closes
ticket 20241.
o Minor features (config):
- Warn users when descriptor and port addresses are inconsistent.
Mitigates bug 13953; patch by teor.
o Minor features (controller):
- Allow controllers to configure basic client authorization on
hidden services when they create them with the ADD_ONION controller
command. Implements ticket 15588. Patch by "special".
- Fire a STATUS_SERVER controller event whenever the hibernation
status changes between "awake"/"soft"/"hard". Closes ticket 18685.
- Implement new GETINFO queries for all downloads that use
download_status_t to schedule retries. This allows controllers to
examine the schedule for pending downloads. Closes ticket 19323.
o Minor features (development tools, etags):
- Teach the "make tags" Makefile target how to correctly find
"MOCK_IMPL" function definitions. Patch from nherring; closes
ticket 16869.
o Minor features (directory authority):
- After voting, if the authorities decide that a relay is not
"Valid", they no longer include it in the consensus at all. Closes
ticket 20002; implements part of proposal 272.
- Directory authorities now only give the Guard flag to a relay if
they are also giving it the Stable flag. This change allows us to
simplify path selection for clients. It should have minimal effect
in practice, since >99% of Guards already have the Stable flag.
Implements ticket 18624.
- Directory authorities now write their v3-status-votes file out to
disk earlier in the consensus process, so we have a record of the
votes even if we abort the consensus process. Resolves
ticket 19036.
o Minor features (fallback directory list, new since 0.2.9.7-rc):
- Replace the 81 remaining fallbacks of the 100 originally
introduced in Tor 0.2.8.3-alpha in March 2016, with a list of 177
fallbacks (123 new, 54 existing, 27 removed) generated in December
2016. Resolves ticket 20170.
o Minor features (hidden service):
- Stop being so strict about the payload length of "rendezvous1"
cells. We used to be locked in to the "TAP" handshake length, and
now we can handle better handshakes like "ntor". Resolves
ticket 18998.
o Minor features (infrastructure, time):
- Tor now includes an improved timer backend, so that we can
efficiently support tens or hundreds of thousands of concurrent
timers, as will be needed for some of our planned anti-traffic-
analysis work. This code is based on William Ahern's "timeout.c"
project, which implements a "tickless hierarchical timing wheel".
Closes ticket 18365.
- Tor now uses the operating system's monotonic timers (where
available) for internal fine-grained timing. Previously we would
look at the system clock, and then attempt to compensate for the
clock running backwards. Closes ticket 18908.
o Minor features (logging):
- Add a set of macros to check nonfatal assertions, for internal
use. Migrating more of our checks to these should help us avoid
needless crash bugs. Closes ticket 18613.
- Provide a more useful warning message when configured with an
invalid Nickname. Closes ticket 18300; patch from "icanhasaccount".
- When dumping unparseable router descriptors, optionally store them
in separate files, named by digest, up to a configurable size
limit. You can change the size limit by setting the
MaxUnparseableDescSizeToLog option, and disable this feature by
setting that option to 0. Closes ticket 18322.
o Minor features (performance):
- Change the "optimistic data" extension from "off by default" to
"on by default". The default was ordinarily overridden by a
consensus option, but when clients were bootstrapping for the
first time, they would not have a consensus to get the option
from. Changing this default saves a round-trip during startup.
Closes ticket 18815.
o Minor features (relay, usability):
- When the directory authorities refuse a bad relay's descriptor,
encourage the relay operator to contact us. Many relay operators
won't notice this line in their logs, but it's a win if even a few
learn why we don't like what their relay was doing. Resolves
ticket 18760.
o Minor features (security, TLS):
- Servers no longer support clients that lack AES ciphersuites.
(3DES is no longer considered an acceptable cipher.) We believe
that no such Tor clients currently exist, since Tor has required
OpenSSL 0.9.7 or later since 2009. Closes ticket 19998.
o Minor features (testing):
- Disable memory protections on OpenBSD when performing our unit
tests for memwipe(). The test deliberately invokes undefined
behavior, and the OpenBSD protections interfere with this. Patch
from "rubiate". Closes ticket 20066.
- Move the test-network.sh script to chutney, and modify tor's test-
network.sh to call the (newer) chutney version when available.
Resolves ticket 19116. Patch by teor.
- Use the lcov convention for marking lines as unreachable, so that
we don't count them when we're generating test coverage data.
Update our coverage tools to understand this convention. Closes
ticket 16792.
- Our link-handshake unit tests now check that when invalid
handshakes fail, they fail with the error messages we expected.
- Our unit testing code that captures log messages no longer
prevents them from being written out if the user asked for them
(by passing --debug or --info or --notice or --warn to the "test"
binary). This change prevents us from missing unexpected log
messages simply because we were looking for others. Related to
ticket 19999.
- The unit tests now log all warning messages with the "BUG" flag.
Previously, they only logged errors by default. This change will
help us make our testing code more correct, and make sure that we
only hit this code when we mean to. In the meantime, however,
there will be more warnings in the unit test logs than before.
This is preparatory work for ticket 19999.
- The unit tests now treat any failure of a "tor_assert_nonfatal()"
assertion as a test failure.
- We've done significant work to make the unit tests run faster.
o Minor features (testing, ipv6):
- Add the hs-ipv6 chutney target to make test-network-all's IPv6
tests. Remove bridges+hs, as it's somewhat redundant. This
requires a recent chutney version that supports IPv6 clients,
relays, and authorities. Closes ticket 20069; patch by teor.
- Add the single-onion and single-onion-ipv6 chutney targets to
"make test-network-all". This requires a recent chutney version
with the single onion network flavors (git c72a652 or later).
Closes ticket 20072; patch by teor.
o Minor features (Tor2web):
- Make Tor2web clients respect ReachableAddresses. This feature was
inadvertently enabled in 0.2.8.6, then removed by bugfix 19973 on
0.2.8.7. Implements feature 20034. Patch by teor.
o Minor features (unix domain sockets):
- When configuring a unix domain socket for a SocksPort,
ControlPort, or Hidden service, you can now wrap the address in
quotes, using C-style escapes inside the quotes. This allows unix
domain socket paths to contain spaces. Resolves ticket 18753.
o Minor features (user interface):
- Tor now supports the ability to declare options deprecated, so
that we can recommend that people stop using them. Previously, this
was done in an ad-hoc way. There is a new --list-deprecated-options
command-line option to list all of the deprecated options. Closes
ticket 19820.
o Minor features (virtual addresses):
- Increase the maximum number of bits for the IPv6 virtual network
prefix from 16 to 104. In this way, the condition for address
allocation is less restrictive. Closes ticket 20151; feature
on 0.2.4.7-alpha.
o Minor bug fixes (circuits):
- Use the CircuitBuildTimeout option whenever
LearnCircuitBuildTimeout is disabled. Previously, we would respect
the option when a user disabled it, but not when it was disabled
because some other option was set. Fixes bug 20073; bugfix on
0.2.4.12-alpha. Patch by teor.
o Minor bugfixes (build):
- The current Git revision when building from a local repository is
now detected correctly when using git worktrees. Fixes bug 20492;
bugfix on 0.2.3.9-alpha.
o Minor bugfixes (relay address discovery):
- Stop reordering IP addresses returned by the OS. This makes it
more likely that Tor will guess the same relay IP address every
time. Fixes issue 20163; bugfix on 0.2.7.1-alpha, ticket 17027.
Reported by René Mayrhofer, patch by "cypherpunks".
o Minor bugfixes (memory allocation):
- Change how we allocate memory for large chunks on buffers, to
avoid a (currently impossible) integer overflow, and to waste less
space when allocating unusually large chunks. Fixes bug 20081;
bugfix on 0.2.0.16-alpha. Issue identified by Guido Vranken.
o Minor bugfixes (bootstrap):
- Remember the directory server we fetched the consensus or previous
certificates from, and use it to fetch future authority
certificates. This change improves bootstrapping performance.
Fixes bug 18963; bugfix on 0.2.8.1-alpha.
o Minor bugfixes (circuits):
- Make sure extend_info_from_router() is only called on servers.
Fixes bug 19639; bugfix on 0.2.8.1-alpha.
o Minor bugfixes (client, fascistfirewall):
- Avoid spurious warnings when ReachableAddresses or FascistFirewall
is set. Fixes bug 20306; bugfix on 0.2.8.2-alpha.
o Minor bugfixes (client, unix domain sockets):
- Disable IsolateClientAddr when using AF_UNIX backed SocksPorts as
the client address is meaningless. Fixes bug 20261; bugfix
on 0.2.6.3-alpha.
o Minor bugfixes (code style):
- Fix an integer signedness conversion issue in the case conversion
tables. Fixes bug 19168; bugfix on 0.2.1.11-alpha.
o Minor bugfixes (compilation):
- Build correctly on versions of libevent2 without support for
evutil_secure_rng_add_bytes(). Fixes bug 19904; bugfix
on 0.2.5.4-alpha.
- When building with Clang, use a full set of GCC warnings.
(Previously, we included only a subset, because of the way we
detected them.) Fixes bug 19216; bugfix on 0.2.0.1-alpha.
- Detect Libevent2 functions correctly on systems that provide
libevent2, but where libevent1 is linked with -levent. Fixes bug
19904; bugfix on 0.2.2.24-alpha. Patch from Rubiate.
- Run correctly when built on Windows build environments that
require _vcsprintf(). Fixes bug 20560; bugfix on 0.2.2.11-alpha.
o Minor bugfixes (configuration):
- When parsing quoted configuration values from the torrc file,
handle Windows line endings correctly. Fixes bug 19167; bugfix on
0.2.0.16-alpha. Patch from "Pingl".
o Minor bugfixes (directory authority):
- Authorities now sort the "package" lines in their votes, for ease
of debugging. (They are already sorted in consensus documents.)
Fixes bug 18840; bugfix on 0.2.6.3-alpha.
- Die with a more useful error when the operator forgets to place
the authority_signing_key file into the keys directory. This
avoids an uninformative assert & traceback about having an invalid
key. Fixes bug 20065; bugfix on 0.2.0.1-alpha.
- When allowing private addresses, mark Exits that only exit to
private locations as such. Fixes bug 20064; bugfix
on 0.2.2.9-alpha.
- When parsing a detached signature, make sure we use the length of
the digest algorithm instead of a hardcoded DIGEST256_LEN in
order to avoid comparing bytes out-of-bounds with a smaller digest
length such as SHA1. Fixes bug 19066; bugfix on 0.2.2.6-alpha.
o Minor bugfixes (getpass):
- Defensively fix a non-triggerable heap corruption at do_getpass()
to protect ourselves from mistakes in the future. Fixes bug
19223; bugfix on 0.2.7.3-rc. Bug found by Guido Vranken, patch
by nherring.
o Minor bugfixes (guard selection):
- Don't mark guards as unreachable if connection_connect() fails.
That function fails for local reasons, so it shouldn't reveal
anything about the status of the guard. Fixes bug 14334; bugfix
on 0.2.3.10-alpha.
- Use a single entry guard even if the NumEntryGuards consensus
parameter is not provided. Fixes bug 17688; bugfix
on 0.2.5.6-alpha.
o Minor bugfixes (hidden services):
- Increase the minimum number of internal circuits we preemptively
build from 2 to 3, so a circuit is available when a client
connects to another onion service. Fixes bug 13239; bugfix
on 0.1.0.1-rc.
- Allow hidden services to run on IPv6 addresses even when the
IPv6Exit option is not set. Fixes bug 18357; bugfix
on 0.2.4.7-alpha.
- Stop logging intro point details to the client log on certain
error conditions. Fixed as part of bug 20012; bugfix on
0.2.4.8-alpha. Patch by teor.
- When deleting an ephemeral hidden service, close its intro points
even if they are not completely open. Fixes bug 18604; bugfix
on 0.2.7.1-alpha.
- When configuring hidden services, check every hidden service
directory's permissions. Previously, we only checked the last
hidden service. Fixes bug 20529; bugfix on 0.2.6.2-alpha.
o Minor bugfixes (IPv6, testing):
- Check for IPv6 correctly on Linux when running test networks.
Fixes bug 19905; bugfix on 0.2.7.3-rc; patch by teor.
o Minor bugfixes (Linux seccomp2 sandbox):
- Add permission to run the sched_yield() and sigaltstack() system
calls, in order to support versions of Tor compiled with asan or
ubsan code that use these calls. Now "sandbox 1" and
"--enable-expensive-hardening" should be compatible on more
systems. Fixes bug 20063; bugfix on 0.2.5.1-alpha.
o Minor bugfixes (logging):
- Downgrade a harmless log message about the
pending_entry_connections list from "warn" to "info". Mitigates
bug 19926.
- Log a more accurate message when we fail to dump a microdescriptor.
Fixes bug 17758; bugfix on 0.2.2.8-alpha. Patch from Daniel Pinto.
- When logging a directory ownership mismatch, log the owning
username correctly. Fixes bug 19578; bugfix on 0.2.2.29-beta.
- When we are unable to remove the bw_accounting file, do not warn
if the reason we couldn't remove it was that it didn't exist.
Fixes bug 19964; bugfix on 0.2.5.4-alpha. Patch from pastly.
o Minor bugfixes (memory leak):
- Fix a series of slow memory leaks related to parsing torrc files
and options. Fixes bug 19466; bugfix on 0.2.1.6-alpha.
- Avoid a small memory leak when informing worker threads about
rotated onion keys. Fixes bug 20401; bugfix on 0.2.6.3-alpha.
- Fix a small memory leak when receiving AF_UNIX connections on a
SocksPort. Fixes bug 20716; bugfix on 0.2.6.3-alpha.
- When moving a signed descriptor object from a source to an
existing destination, free the allocated memory inside that
destination object. Fixes bug 20715; bugfix on 0.2.8.3-alpha.
- Fix a memory leak and use-after-free error when removing entries
from the sandbox's getaddrinfo() cache. Fixes bug 20710; bugfix on
0.2.5.5-alpha. Patch from "cypherpunks".
- Fix a small, uncommon memory leak that could occur when reading a
truncated ed25519 key file. Fixes bug 18956; bugfix
on 0.2.6.1-alpha.
o Minor bugfixes (option parsing):
- Count unix sockets when counting client listeners (SOCKS, Trans,
NATD, and DNS). This has no user-visible behavior changes: these
options are set once, and never read. Required for correct
behavior in ticket 17178. Fixes bug 19677; bugfix on
0.2.6.3-alpha. Patch by teor.
o Minor bugfixes (options):
- Check the consistency of UseEntryGuards and EntryNodes more
reliably. Fixes bug 20074; bugfix on 0.2.4.12-alpha. Patch
by teor.
- Stop changing the configured value of UseEntryGuards on
authorities and Tor2web clients. Fixes bug 20074; bugfix on
commits 51fc6799 in 0.1.1.16-rc and acda1735 in 0.2.4.3-alpha.
Patch by teor.
o Minor bugfixes (relay):
- Ensure relays don't make multiple connections during bootstrap.
Fixes bug 20591; bugfix on 0.2.8.1-alpha.
- Do not try to parallelize workers more than 16x without the user
explicitly configuring us to do so, even if we do detect more than
16 CPU cores. Fixes bug 19968; bugfix on 0.2.3.1-alpha.
o Minor bugfixes (testing):
- The test-stem and test-network makefile targets now depend only on
the tor binary that they are testing. Previously, they depended on
"make all". Fixes bug 18240; bugfix on 0.2.8.2-alpha. Based on a
patch from "cypherpunks".
- Allow clients to retry HSDirs much faster in test networks. Fixes
bug 19702; bugfix on 0.2.7.1-alpha. Patch by teor.
- Avoid a unit test failure on systems with over 16 detectable CPU
cores. Fixes bug 19968; bugfix on 0.2.3.1-alpha.
- Let backtrace tests work correctly under AddressSanitizer:
disable ASAN's detection of segmentation faults while running
test_bt.sh, so that we can make sure that our own backtrace
generation code works. Fixes bug 18934; bugfix
on 0.2.5.2-alpha. Patch from "cypherpunks".
- Fix the test-network-all target on out-of-tree builds by using the
correct path to the test driver script. Fixes bug 19421; bugfix
on 0.2.7.3-rc.
- Stop spurious failures in the local interface address discovery
unit tests. Fixes bug 20634; bugfix on 0.2.8.1-alpha; patch by
Neel Chauhan.
- Use ECDHE ciphers instead of ECDH in tortls tests. LibreSSL has
removed the ECDH ciphers which caused the tests to fail on
platforms which use it. Fixes bug 20460; bugfix on 0.2.8.1-alpha.
- The tor_tls_server_info_callback unit test no longer crashes when
debug-level logging is turned on. Fixes bug 20041; bugfix
on 0.2.8.1-alpha.
o Minor bugfixes (time):
- Improve overflow checks in tv_udiff and tv_mdiff. Fixes bug 19483;
bugfix on all released tor versions.
- When computing the difference between two times in milliseconds,
we now round to the nearest millisecond correctly. Previously, we
could sometimes round in the wrong direction. Fixes bug 19428;
bugfix on 0.2.2.2-alpha.
o Minor bugfixes (Tor2web):
- Prevent Tor2web clients from running hidden services: these services
are not anonymous due to the one-hop client paths. Fixes bug
19678. Patch by teor.
o Minor bugfixes (user interface):
- Display a more accurate number of suppressed messages in the log
rate-limiter. Previously, there was a potential integer overflow
in the counter. Now, if the number of messages hits a maximum, the
rate-limiter doesn't count any further. Fixes bug 19435; bugfix
on 0.2.4.11-alpha.
- Fix a typo in the passphrase prompt for the ed25519 identity key.
Fixes bug 19503; bugfix on 0.2.7.2-alpha.
o Code simplification and refactoring:
- Remove redundant declarations of the MIN macro. Closes
ticket 18889.
- Rename tor_dup_addr() to tor_addr_to_str_dup() to avoid confusion.
Closes ticket 18462; patch from "icanhasaccount".
- Split the 600-line directory_handle_command_get function into
separate functions for different URL types. Closes ticket 16698.
o Documentation:
- Add module-level internal documentation for 36 C files that
previously didn't have a high-level overview. Closes ticket 20385.
- Correct the IPv6 syntax in our documentation for the
VirtualAddrNetworkIPv6 torrc option. Closes ticket 19743.
- Correct the minimum bandwidth value in torrc.sample, and queue a
corresponding change for torrc.minimal. Closes ticket 20085.
- Fix spelling of "--enable-tor2web-mode" in the manpage. Closes
ticket 19153. Patch from "U+039b".
- Module-level documentation for several more modules. Closes
tickets 19287 and 19290.
- Document the --passphrase-fd option in the tor manpage. Fixes bug
19504; bugfix on 0.2.7.3-rc.
- Document the default PathsNeededToBuildCircuits value that's used
by clients when the directory authorities don't set
min_paths_for_circs_pct. Fixes bug 20117; bugfix on 0.2.4.10-alpha.
Patch by teor, reported by Jesse V.
- Fix manual for the User option: it takes a username, not a UID.
Fixes bug 19122; bugfix on 0.0.2pre16 (the first version to have
a manpage!).
- Fix the description of the --passphrase-fd option in the
tor-gencert manpage. The option is used to pass the number of a
file descriptor to read the passphrase from, not to read the file
descriptor from. Fixes bug 19505; bugfix on 0.2.0.20-alpha.
o Removed code:
- We no longer include the (dead, deprecated) bufferevent code in
Tor. Closes ticket 19450. Based on a patch from "U+039b".
o Removed features:
- Remove support for "GET /tor/bytes.txt" DirPort request, and
"GETINFO dir-usage" controller request, which were only available
via a compile-time option in Tor anyway. Feature was added in
0.2.2.1-alpha. Resolves ticket 19035.
- There is no longer a compile-time option to disable support for
TransPort. (If you don't want TransPort, just don't use it.) Patch
from "U+039b". Closes ticket 19449.
o Testing:
- Run more workqueue tests as part of "make check". These had
previously been implemented, but you needed to know special
command-line options to enable them.
- We now have unit tests for our code to reject zlib "compression
bombs". (Fortunately, the code works fine.)
1
0
Hi!
Tor Browser 6.0.8 is now available from the Tor Project page[1] and also
from our distribution directory[2].
This release features important security updates to Firefox[3].
Besides updating Firefox to 45.6.0esr which is fixing important security
bugs we ship the latest Tor stable version, 0.2.8.11. HTTPS-Everywhere
is updated as well (to 5.2.8) and we make improvements to our default
obfs4 bridges.
Here is the full changelog since 6.0.7:
* All Platforms
* Update Firefox to 45.6.0esr
* Tor to 0.2.8.11
* Update Torbutton to 1.9.5.13
* Bug 20947: Donation banner improvements
* Update HTTPS-Everywhere to 5.2.8
* Bug 20809: Use non-/html search engine URL for DuckDuckGo search
plugins
* Bug 20837: Activate iat-mode for certain obfs4 bridges
* Bug 20838: Uncomment NX01 default obfs4 bridge
* Bug 20840: Rotate ports a third time for default obfs4 bridges
Georg
[1] https://www.torproject.org/download/download-easy.html
[2] https://www.torproject.org/dist/torbrowser/6.0.8/
[3] https://www.mozilla.org/en-US/security/advisories/mfsa2016-95/
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