- tor-announce - lists.torproject.org

Tor 0.2.8.9 is released (with security fixes)
by Nick Mathewson 17 Oct '16

17 Oct '16

Hi, all! There is a new stable release of the Tor source code, with fixes for a security bug. You should probably upgrade as packages become available. (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/ . You will have to enter the actual email address you used to subscribe.) You can download the source from the usual place on the website. Packages should be up within a few days. If you maintain an older version of Tor, you can find backported patches for this fix at https://trac.torproject.org/projects/tor/ticket/20384 ==== Changes in version 0.2.8.9 - 2016-10-17 Tor 0.2.8.9 backports a fix for a security hole in previous versions of Tor that would allow a remote attacker to crash a Tor client, hidden service, relay, or authority. All Tor users should upgrade to this version, or to 0.2.9.4-alpha. Patches will be released for older versions of Tor. o Major features (security fixes, also in 0.2.9.4-alpha): - Prevent a class of security bugs caused by treating the contents of a buffer chunk as if they were a NUL-terminated string. At least one such bug seems to be present in all currently used versions of Tor, and would allow an attacker to remotely crash most Tor instances, especially those compiled with extra compiler hardening. With this defense in place, such bugs can't crash Tor, though we should still fix them as they occur. Closes ticket 20384 (TROVE-2016-10-001). o Minor features (geoip): - Update geoip and geoip6 to the October 4 2016 Maxmind GeoLite2 Country database.

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Tor 0.2.8.8 is released
by Nick Mathewson 23 Sep '16

23 Sep '16

Hi, all! There is a new stable release of the Tor source code, with fixes for several important bugs. (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/ . You will have to enter the actual email address you used to subscribe.) You can download the source from the usual place on the website. Packages should be up in a few days. (There is also a concurrent release of Tor 0.2.9.3-alpha; for alpha announcements, please see tor-talk@ or the blog.) ==== Changes in version 0.2.8.8 - 2016-09-23 Tor 0.2.8.8 fixes two crash bugs present in previous versions of the 0.2.8.x series. Relays running 0.2.8.x should upgrade, as should users who select public relays as their bridges. o Major bugfixes (crash): - Fix a complicated crash bug that could affect Tor clients configured to use bridges when replacing a networkstatus consensus in which one of their bridges was mentioned. OpenBSD users saw more crashes here, but all platforms were potentially affected. Fixes bug 20103; bugfix on 0.2.8.2-alpha. o Major bugfixes (relay, OOM handler): - Fix a timing-dependent assertion failure that could occur when we tried to flush from a circuit after having freed its cells because of an out-of-memory condition. Fixes bug 20203; bugfix on 0.2.8.1-alpha. Thanks to "cypherpunks" for help diagnosing this one. o Minor feature (fallback directories): - Remove broken fallbacks from the hard-coded fallback directory list. Closes ticket 20190; patch by teor. o Minor features (geoip): - Update geoip and geoip6 to the September 6 2016 Maxmind GeoLite2 Country database.

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Tor Browser 6.0.5 is released
by Nicolas Vigier 16 Sep '16

16 Sep '16

Tor Browser 6.0.5 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/6.0.5/ This release features important security updates to Firefox including the recently disclosed extension update vulnerability [3]. All users should upgrade as soon as possible. 3: http://seclists.org/dailydave/2016/q3/51 That vulnerability [4] allows an attacker who is able to obtain a valid certificate for addons.mozilla.org to impersonate Mozilla's servers and to deliver a malicious extension update, e.g. for NoScript. This could lead to arbitrary code execution. Moreover, other built-in certificate pinnings are affected as well. Obtaining such a certificate is not an easy task, but it's within reach of powerful adversaries (e.g. nation states). 4: https://bugzilla.mozilla.org/show_bug.cgi?id=1303127 Thanks to everyone who helped investigating this bug and getting a bugfix release out as fast as possible. We are currently building the alpha and hardened bundles (6.5a3 and 6.5a3-hardened) that will contain the fix for alpha/hardened channel users. We expect them to get released at the beginning of next week. Until then users are strongly encouraged to use Tor Browser 6.0.5. Apart from fixing Firefox vulnerabilities this release comes with a new Tor stable version (0.2.8.7), an updated HTTPS-Everywhere (5.2.4), and fixes minor bugs. Here is the full changelog since Tor Browser 6.0.4: * All Platforms * Update Firefox to 45.4.0esr * Update Tor to 0.2.8.7 * Update Torbutton to 1.9.5.7 * Bug 18589: Clear site security settings during New Identity * Bug 19906: "Maximizing Tor Browser" Notification can exist multiple times * Update HTTPS-Everywhere to 5.2.4 * Bug 20092: Rotate ports for default obfs4 bridges * Bug 20040: Add update support for unpacked HTTPS Everywhere * Windows * Bug 19725: Remove old updater files left on disk after upgrade to 6.x * Linux * Bug 19725: Remove old updater files left on disk after upgrade to 6.x * Android * Bug 19706: Store browser data in the app home directory * Build system * All platforms * Upgrade Go to 1.4.3

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Tor 0.2.8.7 is released
by Nick Mathewson 24 Aug '16

24 Aug '16

Hi, all! There is a new stable release of the Tor source code, with fixes for several important bugs. (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/ . You will have to enter the actual email address you used to subscribe.) You can download the source from the usual place on the website. Packages should be up in a few days. (There is also a concurrent release of Tor 0.2.9.2-alpha; for alpha announcements, please see tor-talk@ or the blog.) ==== Changes in version 0.2.8.7 - 2016-08-24 Tor 0.2.8.7 fixes an important bug related to the ReachableAddresses option in 0.2.8.6, and replaces a retiring bridge authority. Everyone who sets the ReachableAddresses option, and all bridges, are strongly encouraged to upgrade. o Directory authority changes: - The "Tonga" bridge authority has been retired; the new bridge authority is "Bifroest". Closes tickets 19728 and 19690. o Major bugfixes (client, security): - Only use the ReachableAddresses option to restrict the first hop in a path. In earlier versions of 0.2.8.x, it would apply to every hop in the path, with a possible degradation in anonymity for anyone using an uncommon ReachableAddress setting. Fixes bug 19973; bugfix on 0.2.8.2-alpha. o Minor features (geoip): - Update geoip and geoip6 to the August 2 2016 Maxmind GeoLite2 Country database. o Minor bugfixes (compilation): - Remove an inappropriate "inline" in tortls.c that was causing warnings on older versions of GCC. Fixes bug 19903; bugfix on 0.2.8.1-alpha. o Minor bugfixes (fallback directories): - Avoid logging a NULL string pointer when loading fallback directory information. Fixes bug 19947; bugfix on 0.2.4.7-alpha and 0.2.8.1-alpha. Report and patch by "rubiate".

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Tor Browser 6.0.4 is released
by Georg Koppen 16 Aug '16

16 Aug '16

Hi all! Tor Browser 6.0.4 is now available from the Tor Browser Project page[1] and also from our distribution directory[2]. This release finally brings Tor Browser users the latest Tor stable, 0.2.8.6, and avoids pinging Mozilla's servers for system extensions. Pinging Mozilla's servers was responsible for users getting an extension into their Tor Browser that resulted in annoying and confusing "Your Firefox is out of date" notifications on start-up (bug 19890)[3]. Thanks to Mozilla engineers, who fixed that issue as quickly as possible on their side, the extension is not shipped to Tor Browser users anymore since August 11 13:00 UTC. This takes care of getting the add-on removed as well in case it got installed into Tor Browser (as does the fix we ship in Tor Browser 6.0.4) which should have happened/is happening during the next extension update ping. For further information see the discussion in our bug tracker[4]. Users that are on the alpha channel or are using the hardened Tor Browser were not affected. The same goes for Tails users as far as we know. The full changelog since Tor Browser 6.0.3 is: Tor Browser 6.0.4 -- August 16 * All Platforms * Update Tor to 0.2.8.6 * Update NoScript to 2.9.0.14 * Bug 19890: Disable installation of system addons Georg [1] https://www.torproject.org/download/download-easy.html [2] https://www.torproject.org/dist/torbrowser/6.0.4/ [3] https://trac.torproject.org/projects/tor/ticket/19890 [4] https://trac.torproject.org/projects/tor/ticket/19890

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Tor Browser 6.0.3 is released
by Nicolas Vigier 02 Aug '16

02 Aug '16

Tor Browser 6.0.3 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/6.0.3/ This release features important security updates [3] to Firefox. 3: https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#f… This release updates firefox to 45.3.0esr. Additionally, it bumps NoScript to 2.9.0.12, HTTPS-Everywhere to 5.2.1, disables asmjs, removes meek-google and contains a few other bug fixes. Note: Due to bug 19410 [4], on OSX the incremental update will not be working for users who installed the previous version using the .dmg file. The internal updater should still work, though, doing a complete update. 4: https://trac.torproject.org/projects/tor/ticket/19410 Here is the full changelog since 6.0.2: * All Platforms * Update Firefox to 45.3.0esr * Update Torbutton to 1.9.5.6 * Bug 19417: Disable asmjs for now * Bug 19689: Use proper parent window for plugin prompt * Update HTTPS-Everywhere to 5.2.1 * Update NoScript to 2.9.0.12 * Bug 19715: Disable the meek-google pluggable transport option * Bug 19714: Remove mercurius4 obfs4 bridge * Bug 19585: Fix regression test for keyboard layout fingerprinting * Bug 19515: Tor Browser is crashing in graphics code * Bug 18513: Favicon requests can bypass New Identity * OS X * Bug 19269: Icon doesn't appear in Applications folder or Dock * Android * Bug 19484: Avoid compilation error when MOZ_UPDATER is not defined

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Tor 0.2.8.6 is released
by Nick Mathewson 02 Aug '16

02 Aug '16

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/ . You will have to enter the actual email address you used to subscribe.) You can download the source from the usual place on the website. Packages should be up in a few days. ==== Changes in version 0.2.8.6 - 2016-08-02 Tor 0.2.8.6 is the first stable version of the Tor 0.2.8 series. The Tor 0.2.8 series improves client bootstrapping performance, completes the authority-side implementation of improved identity keys for relays, and includes numerous bugfixes and performance improvements throughout the program. This release continues to improve the coverage of Tor's test suite. For a full list of changes since Tor 0.2.7, see the ReleaseNotes file. Below is a list of the changes since Tor 0.2.7. o New system requirements: - Tor no longer attempts to support platforms where the "time_t" type is unsigned. (To the best of our knowledge, only OpenVMS does this, and Tor has never actually built on OpenVMS.) Closes ticket 18184. - Tor no longer supports versions of OpenSSL with a broken implementation of counter mode. (This bug was present in OpenSSL 1.0.0, and was fixed in OpenSSL 1.0.0a.) Tor still detects, but no longer runs with, these versions. - Tor now uses Autoconf version 2.63 or later, and Automake 1.11 or later (released in 2008 and 2009 respectively). If you are building Tor from the git repository instead of from the source distribution, and your tools are older than this, you will need to upgrade. Closes ticket 17732. o Directory authority changes: - Update the V3 identity key for the dannenberg directory authority: it was changed on 18 November 2015. Closes task 17906. Patch by teor. - Urras is no longer a directory authority. Closes ticket 19271. o Major features (directory system): - Include a trial list of default fallback directories, based on an opt-in survey of suitable relays. Doing this should make clients bootstrap more quickly and reliably, and reduce the load on the directory authorities. Closes ticket 15775. Patch by teor. Candidates identified using an OnionOO script by weasel, teor, gsathya, and karsten. - Previously only relays that explicitly opened a directory port (DirPort) accepted directory requests from clients. Now all relays, with and without a DirPort, accept and serve tunneled directory requests that they receive through their ORPort. You can disable this behavior using the new DirCache option. Closes ticket 12538. - When bootstrapping multiple consensus downloads at a time, use the first one that starts downloading, and close the rest. This reduces failures when authorities or fallback directories are slow or down. Together with the code for feature 15775, this feature should reduces failures due to fallback churn. Implements ticket 4483. Patch by teor. Implements IPv4 portions of proposal 210 by mikeperry and teor. o Major features (security, Linux): - When Tor starts as root on Linux and is told to switch user ID, it can now retain the capability to bind to low ports. By default, Tor will do this only when it's switching user ID and some low ports have been configured. You can change this behavior with the new option KeepBindCapabilities. Closes ticket 8195. o Major bugfixes (client, bootstrapping): - Check if bootstrap consensus downloads are still needed when the linked connection attaches. This prevents tor making unnecessary begindir-style connections, which are the only directory connections tor clients make since the fix for 18483 was merged. - Fix some edge cases where consensus download connections may not have been closed, even though they were not needed. Related to fix for 18809. - Make relays retry consensus downloads the correct number of times, rather than the more aggressive client retry count. Fixes part of ticket 18809. o Major bugfixes (dns proxy mode, crash): - Avoid crashing when running as a DNS proxy. Fixes bug 16248; bugfix on 0.2.0.1-alpha. Patch from "cypherpunks". o Major bugfixes (ed25519, voting): - Actually enable support for authorities to match routers by their Ed25519 identities. Previously, the code had been written, but some debugging code that had accidentally been left in the codebase made it stay turned off. Fixes bug 17702; bugfix on 0.2.7.2-alpha. - When collating votes by Ed25519 identities, authorities now include a "NoEdConsensus" flag if the ed25519 value (or lack thereof) for a server does not reflect the majority consensus. Related to bug 17668; bugfix on 0.2.7.2-alpha. - When generating a vote with keypinning disabled, never include two entries for the same ed25519 identity. This bug was causing authorities to generate votes that they could not parse when a router violated key pinning by changing its RSA identity but keeping its Ed25519 identity. Fixes bug 17668; fixes part of bug 18318. Bugfix on 0.2.7.2-alpha. o Major bugfixes (key management): - If OpenSSL fails to generate an RSA key, do not retain a dangling pointer to the previous (uninitialized) key value. The impact here should be limited to a difficult-to-trigger crash, if OpenSSL is running an engine that makes key generation failures possible, or if OpenSSL runs out of memory. Fixes bug 19152; bugfix on 0.2.1.10-alpha. Found by Yuan Jochen Kang, Suman Jana, and Baishakhi Ray. o Major bugfixes (security, client, DNS proxy): - Stop a crash that could occur when a client running with DNSPort received a query with multiple address types, and the first address type was not supported. Found and fixed by Scott Dial. Fixes bug 18710; bugfix on 0.2.5.4-alpha. o Major bugfixes (security, compilation): - Correctly detect compiler flags on systems where _FORTIFY_SOURCE is predefined. Previously, our use of -D_FORTIFY_SOURCE would cause a compiler warning, thereby making other checks fail, and needlessly disabling compiler-hardening support. Fixes one case of bug 18841; bugfix on 0.2.3.17-beta. Patch from "trudokal". - Repair hardened builds under the clang compiler. Previously, our use of _FORTIFY_SOURCE would conflict with clang's address sanitizer. Fixes bug 14821; bugfix on 0.2.5.4-alpha. o Major bugfixes (security, pointers): - Avoid a difficult-to-trigger heap corruption attack when extending a smartlist to contain over 16GB of pointers. Fixes bug 18162; bugfix on 0.1.1.11-alpha, which fixed a related bug incompletely. Reported by Guido Vranken. o Major bugfixes (testing): - Fix a bug that would block 'make test-network-all' on systems where IPv6 packets were lost. Fixes bug 19008; bugfix on 0.2.7.3-rc. o Major bugfixes (user interface): - Correctly give a warning in the cases where a relay is specified by nickname, and one such relay is found, but it is not officially Named. Fixes bug 19203; bugfix on 0.2.3.1-alpha. o Minor features (accounting): - Added two modes to the AccountingRule option: One for limiting only the number of bytes sent ("AccountingRule out"), and one for limiting only the number of bytes received ("AccountingRule in"). Closes ticket 15989; patch from "unixninja92". o Minor features (bug-resistance): - Make Tor survive errors involving connections without a corresponding event object. Previously we'd fail with an assertion; now we produce a log message. Related to bug 16248. - Use tor_snprintf() and tor_vsnprintf() even in external and low- level code, to harden against accidental failures to NUL- terminate. Part of ticket 17852. Patch from jsturgix. Found with Flawfinder. o Minor features (build): - Detect systems with FreeBSD-derived kernels (such as GNU/kFreeBSD) as having possible IPFW support. Closes ticket 18448. Patch from Steven Chamberlain. - Since our build process now uses "make distcheck", we no longer force "make dist" to depend on "make check". Closes ticket 17893; patch from "cypherpunks". - Tor now builds once again with the recent OpenSSL 1.1 development branch (tested against 1.1.0-pre5 and 1.1.0-pre6-dev). We have been tracking OpenSSL 1.1 development as it has progressed, and fixing numerous compatibility issues as they arose. See tickets 17549, 17921, 17984, 19499, and 18286. - When building manual pages, set the timezone to "UTC", so that the output is reproducible. Fixes bug 19558; bugfix on 0.2.2.9-alpha. Patch from intrigeri. o Minor features (clients): - Make clients, onion services, and bridge relays always use an encrypted begindir connection for directory requests. Resolves ticket 18483. Patch by teor. o Minor features (controller): - Add 'GETINFO exit-policy/reject-private/[default,relay]', so controllers can examine the the reject rules added by ExitPolicyRejectPrivate. This makes it easier for stem to display exit policies. - Adds the FallbackDir entries to 'GETINFO config/defaults'. Closes tickets 16774 and 17817. Patch by George Tankersley. - New 'GETINFO hs/service/desc/id/' command to retrieve a hidden service descriptor from a service's local hidden service descriptor cache. Closes ticket 14846. o Minor features (crypto): - Add SHA3 and SHAKE support to crypto.c. Closes ticket 17783. - Add SHA512 support to crypto.c. Closes ticket 17663; patch from George Tankersley. - Improve performance when hashing non-multiple of 8 sized buffers, based on Andrew Moon's public domain SipHash-2-4 implementation. Fixes bug 17544; bugfix on 0.2.5.3-alpha. - Validate the hard-coded Diffie-Hellman parameters and ensure that p is a safe prime, and g is a suitable generator. Closes ticket 18221. - When allocating a digest state object, allocate no more space than we actually need. Previously, we would allocate as much space as the state for the largest algorithm would need. This change saves up to 672 bytes per circuit. Closes ticket 17796. o Minor features (directory downloads): - Add UseDefaultFallbackDirs, which enables any hard-coded fallback directory mirrors. The default is 1; set it to 0 to disable fallbacks. Implements ticket 17576. Patch by teor. - Wait for busy authorities and fallback directories to become non- busy when bootstrapping. (A similar change was made in 6c443e987d for directory caches chosen from the consensus.) Closes ticket 17864; patch by teor. o Minor features (geoip): - Update geoip and geoip6 to the July 6 2016 Maxmind GeoLite2 Country database. o Minor features (hidden service directory): - Streamline relay-side hsdir handling: when relays consider whether to accept an uploaded hidden service descriptor, they no longer check whether they are one of the relays in the network that is "supposed" to handle that descriptor. Implements ticket 18332. o Minor features (IPv6): - Add ClientPreferIPv6DirPort, which is set to 0 by default. If set to 1, tor prefers IPv6 directory addresses. - Add ClientUseIPv4, which is set to 1 by default. If set to 0, tor avoids using IPv4 for client OR and directory connections. - Add address policy assume_action support for IPv6 addresses. - Add an argument 'ipv6=address:orport' to the DirAuthority and FallbackDir torrc options, to specify an IPv6 address for an authority or fallback directory. Add hard-coded ipv6 addresses for directory authorities that have them. Closes ticket 17327; patch from Nick Mathewson and teor. - Allow users to configure directory authorities and fallback directory servers with IPv6 addresses and ORPorts. Resolves ticket 6027. - Limit IPv6 mask bits to 128. - Make tor_ersatz_socketpair work on IPv6-only systems. Fixes bug 17638; bugfix on 0.0.2pre8. Patch by teor. - Try harder to obey the IP version restrictions "ClientUseIPv4 0", "ClientUseIPv6 0", "ClientPreferIPv6ORPort", and "ClientPreferIPv6DirPort". Closes ticket 17840; patch by teor. - Warn when comparing against an AF_UNSPEC address in a policy, it's almost always a bug. Closes ticket 17863; patch by teor. - routerset_parse now accepts IPv6 literal addresses. Fixes bug 17060; bugfix on 0.2.1.3-alpha. Patch by teor. o Minor features (Linux seccomp2 sandbox): - Reject attempts to change our Address with "Sandbox 1" enabled. Changing Address with Sandbox turned on would never actually work, but previously it would fail in strange and confusing ways. Found while fixing 18548. o Minor features (logging): - When logging to syslog, allow a tag to be added to the syslog identity (the string prepended to every log message). The tag can be configured with SyslogIdentityTag and defaults to none. Setting it to "foo" will cause logs to be tagged as "Tor-foo". Closes ticket 17194. o Minor features (portability): - Use timingsafe_memcmp() where available. Closes ticket 17944; patch from <logan(a)hackers.mu>. o Minor features (relay, address discovery): - Add a family argument to get_interface_addresses_raw() and subfunctions to make network interface address interogation more efficient. Now Tor can specifically ask for IPv4, IPv6 or both types of interfaces from the operating system. Resolves ticket 17950. - When get_interface_address6_list(.,AF_UNSPEC,.) is called and fails to enumerate interface addresses using the platform-specific API, have it rely on the UDP socket fallback technique to try and find out what IP addresses (both IPv4 and IPv6) our machine has. Resolves ticket 17951. o Minor features (replay cache): - The replay cache now uses SHA256 instead of SHA1. Implements feature 8961. Patch by teor, issue reported by rransom. o Minor features (robustness): - Exit immediately with an error message if the code attempts to use Libevent without having initialized it. This should resolve some frequently-made mistakes in our unit tests. Closes ticket 18241. o Minor features (security, clock): - Warn when the system clock appears to move back in time (when the state file was last written in the future). Tor doesn't know that consensuses have expired if the clock is in the past. Patch by teor. Implements ticket 17188. o Minor features (security, exit policies): - ExitPolicyRejectPrivate now rejects more private addresses by default. Specifically, it now rejects the relay's outbound bind addresses (if configured), and the relay's configured port addresses (such as ORPort and DirPort). Fixes bug 17027; bugfix on 0.2.0.11-alpha. Patch by teor. o Minor features (security, memory erasure): - Make memwipe() do nothing when passed a NULL pointer or buffer of zero size. Check size argument to memwipe() for underflow. Fixes bug 18089; bugfix on 0.2.3.25 and 0.2.4.6-alpha. Reported by "gk", patch by teor. - Set the unused entries in a smartlist to NULL. This helped catch a (harmless) bug, and shouldn't affect performance too much. Implements ticket 17026. - Use SecureMemoryWipe() function to securely clean memory on Windows. Previously we'd use OpenSSL's OPENSSL_cleanse() function. Implements feature 17986. - Use explicit_bzero or memset_s when present. Previously, we'd use OpenSSL's OPENSSL_cleanse() function. Closes ticket 7419; patches from <logan(a)hackers.mu> and <selven(a)hackers.mu>. o Minor features (security, RNG): - Adjust Tor's use of OpenSSL's RNG APIs so that they absolutely, positively are not allowed to fail. Previously we depended on internal details of OpenSSL's behavior. Closes ticket 17686. - Never use the system entropy output directly for anything besides seeding the PRNG. When we want to generate important keys, instead of using system entropy directly, we now hash it with the PRNG stream. This may help resist certain attacks based on broken OS entropy implementations. Closes part of ticket 17694. - Use modern system calls (like getentropy() or getrandom()) to generate strong entropy on platforms that have them. Closes ticket 13696. o Minor features (security, win32): - Set SO_EXCLUSIVEADDRUSE on Win32 to avoid a local port-stealing attack. Fixes bug 18123; bugfix on all tor versions. Patch by teor. o Minor features (unix domain sockets): - Add a new per-socket option, RelaxDirModeCheck, to allow creating Unix domain sockets without checking the permissions on the parent directory. (Tor checks permissions by default because some operating systems only check permissions on the parent directory. However, some operating systems do look at permissions on the socket, and tor's default check is unneeded.) Closes ticket 18458. Patch by weasel. o Minor features (unix file permissions): - Defer creation of Unix sockets until after setuid. This avoids needing CAP_CHOWN and CAP_FOWNER when using systemd's CapabilityBoundingSet, or chown and fowner when using SELinux. Implements part of ticket 17562. Patch from Jamie Nguyen. - If any directory created by Tor is marked as group readable, the filesystem group is allowed to be either the default GID or the root user. Allowing root to read the DataDirectory prevents the need for CAP_READ_SEARCH when using systemd's CapabilityBoundingSet, or dac_read_search when using SELinux. Implements part of ticket 17562. Patch from Jamie Nguyen. - Introduce a new DataDirectoryGroupReadable option. If it is set to 1, the DataDirectory will be made readable by the default GID. Implements part of ticket 17562. Patch from Jamie Nguyen. o Minor bugfixes (accounting): - The max bandwidth when using 'AccountRule sum' is now correctly logged. Fixes bug 18024; bugfix on 0.2.6.1-alpha. Patch from "unixninja92". o Minor bugfixes (assert, portability): - Fix an assertion failure in memarea.c on systems where "long" is shorter than the size of a pointer. Fixes bug 18716; bugfix on 0.2.1.1-alpha. o Minor bugfixes (bootstrap): - Consistently use the consensus download schedule for authority certificates. Fixes bug 18816; bugfix on 0.2.4.13-alpha. o Minor bugfixes (build): - Avoid spurious failures from configure files related to calling exit(0) in TOR_SEARCH_LIBRARY. Fixes bug 18625; bugfix on 0.2.0.1-alpha. Patch from "cypherpunks". - Do not link the unit tests against both the testing and non- testing versions of the static libraries. Fixes bug 18490; bugfix on 0.2.7.1-alpha. - Resolve warnings when building on systems that are concerned with signed char. Fixes bug 18728; bugfix on 0.2.7.2-alpha and 0.2.6.1-alpha. - Silence spurious clang-scan warnings in the ed25519_donna code by explicitly initializing some objects. Fixes bug 18384; bugfix on 0.2.7.2-alpha. Patch by teor. - When libscrypt.h is found, but no libscrypt library can be linked, treat libscrypt as absent. Fixes bug 19161; bugfix on 0.2.6.1-alpha. - Cause the unit tests to compile correctly on mingw64 versions that lack sscanf. Fixes bug 19213; bugfix on 0.2.7.1-alpha. - Don't try to use the pthread_condattr_setclock() function unless it actually exists. Fixes compilation on NetBSD-6.x. Fixes bug 17819; bugfix on 0.2.6.3-alpha. - Fix backtrace compilation on FreeBSD. Fixes bug 17827; bugfix on 0.2.5.2-alpha. - Fix search for libevent libraries on OpenBSD (and other systems that install libevent 1 and libevent 2 in parallel). Fixes bug 16651; bugfix on 0.1.0.7-rc. Patch from "rubiate". - Isolate environment variables meant for tests from the rest of the build system. Fixes bug 17818; bugfix on 0.2.7.3-rc. - Mark all object files that include micro-revision.i as depending on it, so as to make parallel builds more reliable. Fixes bug 17826; bugfix on 0.2.5.1-alpha. - Remove config.log only from make distclean, not from make clean. Fixes bug 17924; bugfix on 0.2.4.1-alpha. - Replace usage of 'INLINE' with 'inline'. Fixes bug 17804; bugfix on 0.0.2pre8. - Remove an #endif from configure.ac so that we correctly detect the presence of in6_addr.s6_addr32. Fixes bug 17923; bugfix on 0.2.0.13-alpha. o Minor bugfixes (client, bootstrap): - Count receipt of new microdescriptors as progress towards bootstrapping. Previously, with EntryNodes set, Tor might not successfully repopulate the guard set on bootstrapping. Fixes bug 16825; bugfix on 0.2.3.1-alpha. o Minor bugfixes (code correctness): - Fix a bad memory handling bug that would occur if we had queued a cell on a channel's incoming queue. Fortunately, we can't actually queue a cell like that as our code is constructed today, but it's best to avoid this kind of error, even if there isn't any code that triggers it today. Fixes bug 18570; bugfix on 0.2.4.4-alpha. - Assert that allocated memory held by the reputation code is freed according to its internal counters. Fixes bug 17753; bugfix on 0.1.1.1-alpha. - Assert when the TLS contexts fail to initialize. Fixes bug 17683; bugfix on 0.0.6. - Update to the latest version of Trunnel, which tries harder to avoid generating code that can invoke memcpy(p,NULL,0). Bug found by clang address sanitizer. Fixes bug 18373; bugfix on 0.2.7.2-alpha. - When closing an entry connection, generate a warning if we should have sent an end cell for it but we haven't. Fixes bug 17876; bugfix on 0.2.3.2-alpha. o Minor bugfixes (configuration): - Fix a tiny memory leak when parsing a port configuration ending in ":auto". Fixes bug 18374; bugfix on 0.2.3.3-alpha. o Minor bugfixes (containers): - If we somehow attempt to construct a heap with more than 1073741822 elements, avoid an integer overflow when maintaining the heap property. Fixes bug 18296; bugfix on 0.1.2.1-alpha. o Minor bugfixes (controller, microdescriptors): - Make GETINFO dir/status-vote/current/consensus conform to the control specification by returning "551 Could not open cached consensus..." when not caching consensuses. Fixes bug 18920; bugfix on 0.2.2.6-alpha. o Minor bugfixes (crypto): - Check the return value of HMAC() and assert on failure. Fixes bug 17658; bugfix on 0.2.3.6-alpha. Patch by teor. o Minor bugfixes (directories): - When fetching extrainfo documents, compare their SHA256 digests and Ed25519 signing key certificates with the routerinfo that led us to fetch them, rather than with the most recent routerinfo. Otherwise we generate many spurious warnings about mismatches. Fixes bug 17150; bugfix on 0.2.7.2-alpha. - When generating a URL for a directory server on an IPv6 address, wrap the IPv6 address in square brackets. Fixes bug 18051; bugfix on 0.2.3.9-alpha. Patch from Malek. o Minor bugfixes (downloading): - Predict more correctly whether we'll be downloading over HTTP when we determine the maximum length of a URL. This should avoid a "BUG" warning about the Squid HTTP proxy and its URL limits. Fixes bug 19191. o Minor bugfixes (exit policies, security): - Refresh an exit relay's exit policy when interface addresses change. Previously, tor only refreshed the exit policy when the configured external address changed. Fixes bug 18208; bugfix on 0.2.7.3-rc. Patch by teor. o Minor bugfixes (fallback directories): - Mark fallbacks as "too busy" when they return a 503 response, rather than just marking authorities. Fixes bug 17572; bugfix on 0.2.4.7-alpha. Patch by teor. - When requesting extrainfo descriptors from a trusted directory server, check whether it is an authority or a fallback directory which supports extrainfo descriptors. Fixes bug 18489; bugfix on 0.2.4.7-alpha. Reported by atagar, patch by teor. o Minor bugfixes (hidden service, client): - Handle the case where the user makes several fast consecutive requests to the same .onion address. Previously, the first six requests would each trigger a descriptor fetch, each picking a directory (there are 6 overall) and the seventh one would fail because no directories were left, thereby triggering a close on all current directory connections asking for the hidden service. The solution here is to not close the connections if we have pending directory fetches. Fixes bug 15937; bugfix on 0.2.7.1-alpha. o Minor bugfixes (hidden service, control port): - Add the onion address to the HS_DESC event for the UPLOADED action both on success or failure. It was previously hardcoded with UNKNOWN. Fixes bug 16023; bugfix on 0.2.7.2-alpha. o Minor bugfixes (hidden service, directory): - Bridges now refuse "rendezvous2" (hidden service descriptor) publish attempts. Suggested by ticket 18332. o Minor bugfixes (IPv6): - Update the limits in max_dl_per_request for IPv6 address length. Fixes bug 17573; bugfix on 0.2.1.5-alpha. o Minor bugfixes (Linux seccomp2 sandbox): - Allow more syscalls when running with "Sandbox 1" enabled: sysinfo, getsockopt(SO_SNDBUF), and setsockopt(SO_SNDBUFFORCE). On some systems, these are required for Tor to start. Fixes bug 18397; bugfix on 0.2.5.1-alpha. Patch from Daniel Pinto. - Allow IPPROTO_UDP datagram sockets when running with "Sandbox 1", so that get_interface_address6_via_udp_socket_hack() can work. Fixes bug 19660; bugfix on 0.2.5.1-alpha. - Allow the setrlimit syscall, and the prlimit and prlimit64 syscalls, which some libc implementations use under the hood. Fixes bug 15221; bugfix on 0.2.5.1-alpha. - Avoid a 10-second delay when starting as a client with "Sandbox 1" enabled and no DNS resolvers configured. This should help TAILS start up faster. Fixes bug 18548; bugfix on 0.2.5.1-alpha. - Fix a crash when using offline master ed25519 keys with the Linux seccomp2 sandbox enabled. Fixes bug 17675; bugfix on 0.2.7.3-rc. - Allow statistics to be written to disk when "Sandbox 1" is enabled. Fixes bugs 19556 and 19957; bugfix on 0.2.5.1-alpha and 0.2.6.1-alpha respectively. o Minor bugfixes (logging): - In log messages that include a function name, use __FUNCTION__ instead of __PRETTY_FUNCTION__. In GCC, these are synonymous, but with clang __PRETTY_FUNCTION__ has extra information we don't need. Fixes bug 16563; bugfix on 0.0.2pre8. Fix by Tom van der Woerdt. - Remove needless quotes from a log message about unparseable addresses. Fixes bug 17843; bugfix on 0.2.3.3-alpha. - Scrub service name in "unrecognized service ID" log messages. Fixes bug 18600; bugfix on 0.2.4.11-alpha. - When logging information about an unparsable networkstatus vote or consensus, do not say "vote" when we mean consensus. Fixes bug 18368; bugfix on 0.2.0.8-alpha. - When we can't generate a signing key because OfflineMasterKey is set, do not imply that we should have been able to load it. Fixes bug 18133; bugfix on 0.2.7.2-alpha. - When logging a malformed hostname received through socks4, scrub it if SafeLogging says we should. Fixes bug 17419; bugfix on 0.1.1.16-rc. o Minor bugfixes (memory safety): - Avoid freeing an uninitialized pointer when opening a socket fails in get_interface_addresses_ioctl(). Fixes bug 18454; bugfix on 0.2.3.11-alpha. Reported by toralf and "cypherpunks", patch by teor. - Fix a memory leak in "tor --list-fingerprint". Fixes part of bug 18672; bugfix on 0.2.5.1-alpha. - Fix a memory leak in tor-gencert. Fixes part of bug 18672; bugfix on 0.2.0.1-alpha. o Minor bugfixes (pluggable transports): - Avoid reporting a spurious error when we decide that we don't need to terminate a pluggable transport because it has already exited. Fixes bug 18686; bugfix on 0.2.5.5-alpha. o Minor bugfixes (pointer arithmetic): - Fix a bug in memarea_alloc() that could have resulted in remote heap write access, if Tor had ever passed an unchecked size to memarea_alloc(). Fortunately, all the sizes we pass to memarea_alloc() are pre-checked to be less than 128 kilobytes. Fixes bug 19150; bugfix on 0.2.1.1-alpha. Bug found by Guido Vranken. o Minor bugfixes (private directory): - Prevent a race condition when creating private directories. Fixes part of bug 17852; bugfix on 0.0.2pre13. Part of ticket 17852. Patch from jsturgix. Found with Flawfinder. o Minor bugfixes (relays): - Check that both the ORPort and DirPort (if present) are reachable before publishing a relay descriptor. Otherwise, relays publish a descriptor with DirPort 0 when the DirPort reachability test takes longer than the ORPort reachability test. Fixes bug 18050; bugfix on 0.1.0.1-rc. Reported by "starlight", patch by teor. - Resolve some edge cases where we might launch an ORPort reachability check even when DisableNetwork is set. Noticed while fixing bug 18616; bugfix on 0.2.3.9-alpha. o Minor bugfixes (relays, hidden services): - Refuse connection requests to private OR addresses unless ExtendAllowPrivateAddresses is set. Previously, tor would connect, then refuse to send any cells to a private address. Fixes bugs 17674 and 8976; bugfix on 0.2.3.21-rc. Patch by teor. o Minor bugfixes (security, hidden services): - Prevent hidden services connecting to client-supplied rendezvous addresses that are reserved as internal or multicast. Fixes bug 8976; bugfix on 0.2.3.21-rc. Patch by dgoulet and teor. o Minor bugfixes (statistics): - Consistently check for overflow in round_*_to_next_multiple_of functions, and add unit tests with additional and maximal values. Fixes part of bug 13192; bugfix on 0.2.2.1-alpha. - Handle edge cases in the laplace functions: avoid division by zero, avoid taking the log of zero, and silence clang type conversion warnings using round and trunc. Add unit tests for edge cases with maximal values. Fixes part of bug 13192; bugfix on 0.2.6.2-alpha. - We now include consensus downloads via IPv6 in our directory- request statistics. Fixes bug 18460; bugfix on 0.2.3.14-alpha. o Minor bugfixes (test networks, IPv6): - Allow internal IPv6 addresses in descriptors in test networks. Fixes bug 17153; bugfix on 0.2.3.16-alpha. Patch by teor, reported by karsten. o Minor bugfixes (testing): - Check the full results of SHA256 and SHA512 digests in the unit tests. Bugfix on 0.2.2.4-alpha. Patch by teor. - Fix a memory leak in the ntor test. Fixes bug 17778; bugfix on 0.2.4.8-alpha. - Fix a small memory leak that would occur when the TestingEnableCellStatsEvent option was turned on. Fixes bug 18673; bugfix on 0.2.5.2-alpha. - Make unit tests pass on IPv6-only systems, and systems without localhost addresses (like some FreeBSD jails). Fixes bug 17632; bugfix on 0.2.7.3-rc. Patch by teor. - The test for log_heartbeat was incorrectly failing in timezones with non-integer offsets. Instead of comparing the end of the time string against a constant, compare it to the output of format_local_iso_time when given the correct input. Fixes bug 18039; bugfix on 0.2.5.4-alpha. - We no longer disable assertions in the unit tests when coverage is enabled. Instead, we require you to say --disable-asserts-in-tests to the configure script if you need assertions disabled in the unit tests (for example, if you want to perform branch coverage). Fixes bug 18242; bugfix on 0.2.7.1-alpha. o Minor bugfixes (time handling): - When correcting a corrupt 'struct tm' value, fill in the tm_wday field. Otherwise, our unit tests crash on Windows. Fixes bug 18977; bugfix on 0.2.2.25-alpha. - Avoid overflow in tor_timegm when parsing dates in and after 2038 on platforms with 32-bit time_t. Fixes bug 18479; bugfix on 0.0.2pre14. Patch by teor. o Minor bugfixes (tor-gencert): - Correctly handle the case where an authority operator enters a passphrase but sends an EOF before sending a newline. Fixes bug 17443; bugfix on 0.2.0.20-rc. Found by junglefowl. o Code simplification and refactoring: - Clean up a little duplicated code in crypto_expand_key_material_TAP(). Closes ticket 17587; patch from "pfrankw". - Decouple the list of streams waiting to be attached to circuits from the overall connection list. This change makes it possible to attach streams quickly while simplifying Tor's callgraph and avoiding O(N) scans of the entire connection list. Closes ticket 17590. - Extract the more complicated parts of circuit_mark_for_close() into a new function that we run periodically before circuits are freed. This change removes more than half of the functions currently in the "blob". Closes ticket 17218. - Move logging of redundant policy entries in policies_parse_exit_policy_internal into its own function. Closes ticket 17608; patch from "juce". - Quote all the string interpolations in configure.ac -- even those which we are pretty sure can't contain spaces. Closes ticket 17744. Patch from zerosion. - Remove code for configuring OpenSSL dynamic locks; OpenSSL doesn't use them. Closes ticket 17926. - Remove specialized code for non-inplace AES_CTR. 99% of our AES is inplace, so there's no need to have a separate implementation for the non-inplace code. Closes ticket 18258. Patch from Malek. - Simplify return types for some crypto functions that can't actually fail. Patch from Hassan Alsibyani. Closes ticket 18259. - When a direct directory request fails immediately on launch, instead of relaunching that request from inside the code that launches it, instead mark the connection for teardown. This change simplifies Tor's callback and prevents the directory-request launching code from invoking itself recursively. Closes ticket 17589. o Documentation: - Add a description of the correct use of the '--keygen' command- line option. Closes ticket 17583; based on text by 's7r'. - Change build messages to refer to "Fedora" instead of "Fedora Core", and "dnf" instead of "yum". Closes tickets 18459 and 18426. Patches from "icanhasaccount" and "cypherpunks". - Document the contents of the 'datadir/keys' subdirectory in the manual page. Closes ticket 17621. - Document the minimum HeartbeatPeriod value. Closes ticket 15638. - Explain actual minima for BandwidthRate. Closes ticket 16382. - Fix a minor formatting typo in the manpage. Closes ticket 17791. - Mention torspec URL in the manpage and point the reader to it whenever we mention a document that belongs in torspce. Fixes issue 17392. - Stop recommending use of nicknames to identify relays in our MapAddress documentation. Closes ticket 18312. o Removed features: - Remove client-side support for connecting to Tor relays running versions of Tor before 0.2.3.6-alpha. These relays didn't support the v3 TLS handshake protocol, and are no longer allowed on the Tor network. Implements the client side of ticket 11150. Based on patches by Tom van der Woerdt. - We no longer maintain an internal freelist in memarea.c. Allocators should be good enough to make this code unnecessary, and it's doubtful that it ever had any performance benefit. o Testing: - Add unit tests to check for common RNG failure modes, such as returning all zeroes, identical values, or incrementing values (OpenSSL's rand_predictable feature). Patch by teor. - Always test both ed25519 backends, so that we can be sure that our batch-open replacement code works. Part of ticket 16794. - Cover dns_resolve_impl() in dns.c with unit tests. Implements a portion of ticket 16831. - Fix several warnings from clang's address sanitizer produced in the unit tests. - Log more information when the backtrace tests fail. Closes ticket 17892. Patch from "cypherpunks." - More unit tests for compat_libevent.c, procmon.c, tortls.c, util_format.c, directory.c, and options_validate.c. Closes tickets 17075, 17082, 17084, 17003, and 17076 respectively. Patches from Ola Bini. - Treat backtrace test failures as expected on FreeBSD until we solve bug 17808. Closes ticket 18204. - Unit tests for directory_handle_command_get. Closes ticket 17004. Patch from Reinaldo de Souza Jr.

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Tor Browser 6.0.2 is released
by Nicolas Vigier 22 Jun '16

22 Jun '16

Tor Browser 6.0.2 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/6.0.2/ Tor Browser 6.0.2 is a fixup release to address the most pressing issues we found after switching to Firefox 45.2.0esr. In particular, we resolved a possible crash bug visible e.g. on Faceboook or mega.nz and we fixed the broken PDF download button in the PDF reader. Note: In version 6.0 we started code signing the OS X bundle for Gatekeeper support. A side effect of this signature is that it makes it harder to compare the bundles we ship with the bundles produced using reproducible builds, therefore we plan [3] to post instructions for removing the OS X code signing parts on our website soon. An other effect is that the incremental update will not be working for users who installed the previous version using the .dmg file, due to bug 19410 [4]. The internal updater should still work, though, doing a complete update. 3: https://bugs.torproject.org/18925 4: https://bugs.torproject.org/19410 Here is the full changelog since 6.0.1: * All Platforms * Update Torbutton to 1.9.5.5 * Bug 19417: Clear asmjscache * Bug 19401: Fix broken PDF download button * Bug 19411: Don't show update icon if a partial update failed * Bug 19400: Back out GCC bug workaround to avoid asmjs crash * Windows * Bug 19348: Adapt to more than one build target on Windows (fixes updates) * Linux * Bug 19276: Disable Xrender due to possible performance regressions

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Tor Browser 6.0.1 is released
by Nicolas Vigier 08 Jun '16

08 Jun '16

Tor Browser 6.0.1 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/6.0.1/ This release features important security updates [3] to Firefox. 3: https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#f… Tor Browser 6.0.1 is the first point release in our 6.0 series. It updates Firefox to 45.2.0esr, contains fixes for two crash bugs and does not ship the loop extension anymore. Here is the full changelog since 6.0: * All Platforms * Update Firefox to 45.2.0esr * Bug 18884: Don't build the loop extension * Bug 19187: Backport fix for crash related to popup menus * Bug 19212: Fix crash related to network panel in developer tools * Linux * Bug 19189: Backport for working around a linker (gold) bug

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Tor Browser 6.0 is released
by Nicolas Vigier 30 May '16

30 May '16

The Tor Browser Team is proud to announce the first stable release in the 6.0 series. This release is 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/6.0/ This release brings us up to date with Firefox 45-ESR [3], which should mean a better support for HTML5 video on Youtube, as well as a host of other improvements. 3: https://www.mozilla.org/en-US/firefox/organizations/faq/ Beginning with the 6.0 series code-signing for OS X systems is introduced. This should help our users who had trouble with getting Tor Browser to work on their Mac due to Gatekeeper interference. There were bundle layout changes necessary to adhere to code signing requirements but the transition to the new Tor Browser layout on disk should go smoothly. The release also features new privacy enhancements and disables features where we either did not have the time [4] to write a proper fix or where we decided they are rather potentially harmful in a Tor Browser context. 4: https://bugs.torproject.org/16998 On the security side this release makes sure that SHA1 certificate support is disabled [5] and our updater is not only relying on the signature alone but is checking the hash [6] of the downloaded update file as well before applying it. Moreover, we provide a fix [7] for a Windows installer related DLL hijacking vulnerability. 5: https://bugs.torproject.org/18042 6: https://bugs.torproject.org/19121 7: https://bugs.torproject.org/17895 A note on our search engine situation: Lately, we got a couple of comments on our blog and via email wondering why we are now using DuckDuckGo as the default search engine and not Disconnect anymore. Well, we still use Disconnect. But for a while now Disconnect has no access to Google search results anymore which we used in Tor Browser. Disconnect being more a meta search engine which allows users to choose between different search providers fell back to delivering Bing search results which were basically unacceptable quality-wise. While Disconnect is still trying to fix the situation we asked them to change the fallback to DuckDuckGo as their search results are strictly better than the ones Bing delivers. The full changelog since Tor Browser 5.5.5 is: Tor Browser 6.0 -- May 30 * All Platforms * Update Firefox to 45.1.1esr * Update OpenSSL to 1.0.1t * Update Torbutton to 1.9.5.4 * Bug 18466: Make Torbutton compatible with Firefox ESR 45 * Bug 18743: Pref to hide 'Sign in to Sync' button in hamburger menu * Bug 18905: Hide unusable items from help menu * Bug 16017: Allow users to more easily set a non-tor SSH proxy * Bug 17599: Provide shortcuts for New Identity and New Circuit * Translation updates * Code clean-up * Update Tor Launcher to 0.2.9.3 * Bug 13252: Do not store data in the application bundle * Bug 18947: Tor Browser is not starting on OS X if put into /Applications * Bug 11773: Setup wizard UI flow improvements * Translation updates * Update HTTPS-Everywhere to 5.1.9 * Update meek to 0.22 (tag 0.22-18371-3) * Bug 18371: Symlinks are incompatible with Gatekeeper signing * Bug 18904: Mac OS: meek-http-helper profile not updated * Bug 15197 and child tickets: Rebase Tor Browser patches to ESR 45 * Bug 18900: Fix broken updater on Linux * Bug 19121: The update.xml hash should get checked during update * Bug 18042: Disable SHA1 certificate support * Bug 18821: Disable libmdns support for desktop and mobile * Bug 18848: Disable additional welcome URL shown on first start * Bug 14970: Exempt our extensions from signing requirement * Bug 16328: Disable MediaDevices.enumerateDevices * Bug 16673: Disable HTTP Alternative-Services * Bug 17167: Disable Mozilla's tracking protection * Bug 18603: Disable performance-based WebGL fingerprinting option * Bug 18738: Disable Selfsupport and Unified Telemetry * Bug 18799: Disable Network Tickler * Bug 18800: Remove DNS lookup in lockfile code * Bug 18801: Disable dom.push preferences * Bug 18802: Remove the JS-based Flash VM (Shumway) * Bug 18863: Disable MozTCPSocket explicitly * Bug 15640: Place Canvas MediaStream behind site permission * Bug 16326: Verify cache isolation for Request and Fetch APIs * Bug 18741: Fix OCSP and favicon isolation for ESR 45 * Bug 16998: Disable <link rel="preconnect"> for now * Bug 18898: Exempt the meek extension from the signing requirement as well * Bug 18899: Don't copy Torbutton, TorLauncher, etc. into meek profile * Bug 18890: Test importScripts() for cache and network isolation * Bug 18886: Hide pocket menu items when Pocket is disabled * Bug 18703: Fix circuit isolation issues on Page Info dialog * Bug 19115: Tor Browser should not fall back to Bing as its search engine * Bug 18915+19065: Use our search plugins in localized builds * Bug 19176: Zip our language packs deterministically * Bug 18811: Fix first-party isolation for blobs URLs in Workers * Bug 18950: Disable or audit Reader View * Bug 18886: Remove Pocket * Bug 18619: Tor Browser reports "InvalidStateError" in browser console * Bug 18945: Disable monitoring the connected state of Tor Browser users * Bug 18855: Don't show error after add-on directory clean-up * Bug 18885: Disable the option of logging TLS/SSL key material * Bug 18770: SVGs should not show up on Page Info dialog when disabled * Bug 18958: Spoof screen.orientation values * Bug 19047: Disable Heartbeat prompts * Bug 18914: Use English-only label in <isindex/> tags * Bug 18996: Investigate server logging in esr45-based Tor Browser * Bug 17790: Add unit tests for keyboard fingerprinting defenses * Bug 18995: Regression test to ensure CacheStorage is disabled * Bug 18912: Add automated tests for updater cert pinning * Bug 16728: Add test cases for favicon isolation * Bug 18976: Remove some FTE bridges * Windows * Bug 13419: Support ICU in Windows builds * Bug 16874: Fix broken https://sports.yahoo.com/dailyfantasy page * Bug 18767: Context menu is broken on Windows in ESR 45 based Tor Browser * OS X * Bug 6540: Support OS X Gatekeeper * Bug 13252: Tor Browser should not store data in the application bundle * Bug 18951: HTTPS-E is missing after update * Bug 18904: meek-http-helper profile not updated * Bug 18928: Upgrade is not smooth (requires another restart) * Build System * All Platforms * Bug 18127: Add LXC support for building with Debian guest VMs * Bug 16224: Don't use BUILD_HOSTNAME anymore in Firefox builds * Bug 18919: Remove unused keys and unused dependencies * Windows * Bug 17895: Use NSIS 2.51 for installer to avoid DLL hijacking * Bug 18290: Bump mingw-w64 commit we use * OS X * Bug 18331: Update toolchain for Firefox 45 ESR * Bug 18690: Switch to Debian Wheezy guest VMs * Linux * Bug 18699: Stripping fails due to obsolete Browser/components directory * Bug 18698: Include libgconf2-dev for our Linux builds * Bug 15578: Switch to Debian Wheezy guest VMs (10.04 LTS is EOL)

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