March 2021 - tor-commits - lists.torproject.org

[tor/maint-0.4.5] Bump version to 0.4.4.8-dev
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 94fb308c5d0f0d76b46b25d5f7c584f2b5a900c3 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 09:17:56 2021 -0400 Bump version to 0.4.4.8-dev --- configure.ac | 4 ++-- contrib/win32build/tor-mingw.nsi.in | 2 +- src/win32/orconfig.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/configure.ac b/configure.ac index 731fb29f28..9ee5dd181a 100644 --- a/configure.ac +++ b/configure.ac @@ -4,7 +4,7 @@ dnl Copyright (c) 2007-2019, The Tor Project, Inc. dnl See LICENSE for licensing information AC_PREREQ([2.63]) -AC_INIT([tor],[0.4.4.8]) +AC_INIT([tor],[0.4.4.8-dev]) AC_CONFIG_SRCDIR([src/app/main/tor_main.c]) AC_CONFIG_MACRO_DIR([m4]) @@ -16,7 +16,7 @@ configure_flags="$*" # version number changes. Tor uses it to make sure that it # only shuts down for missing "required protocols" when those protocols # are listed as required by a consensus after this date. -AC_DEFINE(APPROX_RELEASE_DATE, ["2021-03-15"], # for 0.4.4.8 +AC_DEFINE(APPROX_RELEASE_DATE, ["2021-03-16"], # for 0.4.4.8-dev [Approximate date when this software was released. (Updated when the version changes.)]) # "foreign" means we don't follow GNU package layout standards diff --git a/contrib/win32build/tor-mingw.nsi.in b/contrib/win32build/tor-mingw.nsi.in index 06a204fe5b..38046e7c5d 100644 --- a/contrib/win32build/tor-mingw.nsi.in +++ b/contrib/win32build/tor-mingw.nsi.in @@ -8,7 +8,7 @@ !include "LogicLib.nsh" !include "FileFunc.nsh" !insertmacro GetParameters -!define VERSION "0.4.4.8" +!define VERSION "0.4.4.8-dev" !define INSTALLER "tor-${VERSION}-win32.exe" !define WEBSITE "https://www.torproject.org/" !define LICENSE "LICENSE" diff --git a/src/win32/orconfig.h b/src/win32/orconfig.h index b7e1cdff48..1f6284727b 100644 --- a/src/win32/orconfig.h +++ b/src/win32/orconfig.h @@ -217,7 +217,7 @@ #define USING_TWOS_COMPLEMENT /* Version number of package */ -#define VERSION "0.4.4.8" +#define VERSION "0.4.4.8-dev" #define HAVE_STRUCT_SOCKADDR_IN6 #define HAVE_STRUCT_IN6_ADDR

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[tor/maint-0.4.4] Bump version to 0.4.4.8-dev
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 94fb308c5d0f0d76b46b25d5f7c584f2b5a900c3 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 09:17:56 2021 -0400 Bump version to 0.4.4.8-dev --- configure.ac | 4 ++-- contrib/win32build/tor-mingw.nsi.in | 2 +- src/win32/orconfig.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/configure.ac b/configure.ac index 731fb29f28..9ee5dd181a 100644 --- a/configure.ac +++ b/configure.ac @@ -4,7 +4,7 @@ dnl Copyright (c) 2007-2019, The Tor Project, Inc. dnl See LICENSE for licensing information AC_PREREQ([2.63]) -AC_INIT([tor],[0.4.4.8]) +AC_INIT([tor],[0.4.4.8-dev]) AC_CONFIG_SRCDIR([src/app/main/tor_main.c]) AC_CONFIG_MACRO_DIR([m4]) @@ -16,7 +16,7 @@ configure_flags="$*" # version number changes. Tor uses it to make sure that it # only shuts down for missing "required protocols" when those protocols # are listed as required by a consensus after this date. -AC_DEFINE(APPROX_RELEASE_DATE, ["2021-03-15"], # for 0.4.4.8 +AC_DEFINE(APPROX_RELEASE_DATE, ["2021-03-16"], # for 0.4.4.8-dev [Approximate date when this software was released. (Updated when the version changes.)]) # "foreign" means we don't follow GNU package layout standards diff --git a/contrib/win32build/tor-mingw.nsi.in b/contrib/win32build/tor-mingw.nsi.in index 06a204fe5b..38046e7c5d 100644 --- a/contrib/win32build/tor-mingw.nsi.in +++ b/contrib/win32build/tor-mingw.nsi.in @@ -8,7 +8,7 @@ !include "LogicLib.nsh" !include "FileFunc.nsh" !insertmacro GetParameters -!define VERSION "0.4.4.8" +!define VERSION "0.4.4.8-dev" !define INSTALLER "tor-${VERSION}-win32.exe" !define WEBSITE "https://www.torproject.org/" !define LICENSE "LICENSE" diff --git a/src/win32/orconfig.h b/src/win32/orconfig.h index b7e1cdff48..1f6284727b 100644 --- a/src/win32/orconfig.h +++ b/src/win32/orconfig.h @@ -217,7 +217,7 @@ #define USING_TWOS_COMPLEMENT /* Version number of package */ -#define VERSION "0.4.4.8" +#define VERSION "0.4.4.8-dev" #define HAVE_STRUCT_SOCKADDR_IN6 #define HAVE_STRUCT_IN6_ADDR

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[tor/maint-0.3.5] Bump to 0.3.5.14-dev
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 3271c0bde782769ba30685ca8907240328f771c9 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 09:17:31 2021 -0400 Bump to 0.3.5.14-dev --- configure.ac | 2 +- contrib/win32build/tor-mingw.nsi.in | 2 +- src/win32/orconfig.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/configure.ac b/configure.ac index af3762d460..619e91528c 100644 --- a/configure.ac +++ b/configure.ac @@ -4,7 +4,7 @@ dnl Copyright (c) 2007-2019, The Tor Project, Inc. dnl See LICENSE for licensing information AC_PREREQ([2.63]) -AC_INIT([tor],[0.3.5.14]) +AC_INIT([tor],[0.3.5.14-dev]) AC_CONFIG_SRCDIR([src/app/main/tor_main.c]) AC_CONFIG_MACRO_DIR([m4]) diff --git a/contrib/win32build/tor-mingw.nsi.in b/contrib/win32build/tor-mingw.nsi.in index 1f3f728aa0..094a53105a 100644 --- a/contrib/win32build/tor-mingw.nsi.in +++ b/contrib/win32build/tor-mingw.nsi.in @@ -8,7 +8,7 @@ !include "LogicLib.nsh" !include "FileFunc.nsh" !insertmacro GetParameters -!define VERSION "0.3.5.14" +!define VERSION "0.3.5.14-dev" !define INSTALLER "tor-${VERSION}-win32.exe" !define WEBSITE "https://www.torproject.org/" !define LICENSE "LICENSE" diff --git a/src/win32/orconfig.h b/src/win32/orconfig.h index 9cab6cf3e3..1186954db9 100644 --- a/src/win32/orconfig.h +++ b/src/win32/orconfig.h @@ -218,7 +218,7 @@ #define USING_TWOS_COMPLEMENT /* Version number of package */ -#define VERSION "0.3.5.14" +#define VERSION "0.3.5.14-dev"

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[tor/maint-0.4.5] Bump to 0.3.5.14-dev
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 3271c0bde782769ba30685ca8907240328f771c9 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 09:17:31 2021 -0400 Bump to 0.3.5.14-dev --- configure.ac | 2 +- contrib/win32build/tor-mingw.nsi.in | 2 +- src/win32/orconfig.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/configure.ac b/configure.ac index af3762d460..619e91528c 100644 --- a/configure.ac +++ b/configure.ac @@ -4,7 +4,7 @@ dnl Copyright (c) 2007-2019, The Tor Project, Inc. dnl See LICENSE for licensing information AC_PREREQ([2.63]) -AC_INIT([tor],[0.3.5.14]) +AC_INIT([tor],[0.3.5.14-dev]) AC_CONFIG_SRCDIR([src/app/main/tor_main.c]) AC_CONFIG_MACRO_DIR([m4]) diff --git a/contrib/win32build/tor-mingw.nsi.in b/contrib/win32build/tor-mingw.nsi.in index 1f3f728aa0..094a53105a 100644 --- a/contrib/win32build/tor-mingw.nsi.in +++ b/contrib/win32build/tor-mingw.nsi.in @@ -8,7 +8,7 @@ !include "LogicLib.nsh" !include "FileFunc.nsh" !insertmacro GetParameters -!define VERSION "0.3.5.14" +!define VERSION "0.3.5.14-dev" !define INSTALLER "tor-${VERSION}-win32.exe" !define WEBSITE "https://www.torproject.org/" !define LICENSE "LICENSE" diff --git a/src/win32/orconfig.h b/src/win32/orconfig.h index 9cab6cf3e3..1186954db9 100644 --- a/src/win32/orconfig.h +++ b/src/win32/orconfig.h @@ -218,7 +218,7 @@ #define USING_TWOS_COMPLEMENT /* Version number of package */ -#define VERSION "0.3.5.14" +#define VERSION "0.3.5.14-dev"

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[tor/maint-0.4.4] Bump to 0.3.5.14-dev
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 3271c0bde782769ba30685ca8907240328f771c9 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 09:17:31 2021 -0400 Bump to 0.3.5.14-dev --- configure.ac | 2 +- contrib/win32build/tor-mingw.nsi.in | 2 +- src/win32/orconfig.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/configure.ac b/configure.ac index af3762d460..619e91528c 100644 --- a/configure.ac +++ b/configure.ac @@ -4,7 +4,7 @@ dnl Copyright (c) 2007-2019, The Tor Project, Inc. dnl See LICENSE for licensing information AC_PREREQ([2.63]) -AC_INIT([tor],[0.3.5.14]) +AC_INIT([tor],[0.3.5.14-dev]) AC_CONFIG_SRCDIR([src/app/main/tor_main.c]) AC_CONFIG_MACRO_DIR([m4]) diff --git a/contrib/win32build/tor-mingw.nsi.in b/contrib/win32build/tor-mingw.nsi.in index 1f3f728aa0..094a53105a 100644 --- a/contrib/win32build/tor-mingw.nsi.in +++ b/contrib/win32build/tor-mingw.nsi.in @@ -8,7 +8,7 @@ !include "LogicLib.nsh" !include "FileFunc.nsh" !insertmacro GetParameters -!define VERSION "0.3.5.14" +!define VERSION "0.3.5.14-dev" !define INSTALLER "tor-${VERSION}-win32.exe" !define WEBSITE "https://www.torproject.org/" !define LICENSE "LICENSE" diff --git a/src/win32/orconfig.h b/src/win32/orconfig.h index 9cab6cf3e3..1186954db9 100644 --- a/src/win32/orconfig.h +++ b/src/win32/orconfig.h @@ -218,7 +218,7 @@ #define USING_TWOS_COMPLEMENT /* Version number of package */ -#define VERSION "0.3.5.14" +#define VERSION "0.3.5.14-dev"

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[tor/maint-0.4.4] Merge branch 'maint-0.3.5' into maint-0.4.4
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 5fac24053d1615260a4ee437a9686c82262e47a8 Merge: f2cfd1ffad 3271c0bde7 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 09:17:40 2021 -0400 Merge branch 'maint-0.3.5' into maint-0.4.4 "ours" to avoid version bump.

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[tor/release-0.4.4] Merge branch 'maint-0.4.4' into release-0.4.4
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit a93f7363378f90a2faf98f7a3e67707b1be37362 Merge: fecc195294 94fb308c5d Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 09:18:52 2021 -0400 Merge branch 'maint-0.4.4' into release-0.4.4 configure.ac | 4 ++-- contrib/win32build/tor-mingw.nsi.in | 2 +- src/win32/orconfig.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-)

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[tpo/master] Latest stable tor is 0.4.5.7
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 5652f17765297064aeee7b4185592c3500158a5a Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 08:52:11 2021 -0400 Latest stable tor is 0.4.5.7 --- databags/versions.ini | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/databags/versions.ini b/databags/versions.ini index 29261902..f5b63c8d 100644 --- a/databags/versions.ini +++ b/databags/versions.ini @@ -21,7 +21,7 @@ version = 10.5a11 version = 10.5a11 [tor-stable] -version = 0.4.5.6 +version = 0.4.5.7 [tor-alpha] version = 0.4.5.5-rc

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[tor/release-0.4.5] Changelog for 0.4.5.7
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 066de45209f28d69f3ad0046e1d3122ae15364bc Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Mar 15 09:22:06 2021 -0400 Changelog for 0.4.5.7 --- ChangeLog | 85 +++++++++++++++++++++++++++++++++++++++++++++ changes/bug40256_045 | 3 -- changes/bug40287 | 4 --- changes/bug40298 | 3 -- changes/bug40315 | 5 --- changes/bug40316 | 5 --- changes/geoip-2021-03-12 | 9 ----- changes/ticket40286_minimal | 6 ---- changes/ticket40295 | 3 -- changes/ticket40300 | 8 ----- changes/ticket40309 | 3 -- changes/ticket40334 | 3 -- 12 files changed, 85 insertions(+), 52 deletions(-) diff --git a/ChangeLog b/ChangeLog index c91d716c98..57480c08aa 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,88 @@ +Changes in version 0.4.5.7 - 2021-03-16 + Tor 0.4.5.7 fixes two important denial-of-service bugs in earlier + versions of Tor. + + One of these vulnerabilities (TROVE-2021-001) would allow an attacker + who can send directory data to a Tor instance to force that Tor + instance to consume huge amounts of CPU. This is easiest to exploit + against authorities, since anybody can upload to them, but directory + caches could also exploit this vulnerability against relays or clients + when they download. The other vulnerability (TROVE-2021-002) only + affects directory authorities, and would allow an attacker to remotely + crash the authority with an assertion failure. Patches have already + been provided to the authority operators, to help ensure + network stability. + + We recommend that everybody upgrade to one of the releases that fixes + these issues (0.3.5.14, 0.4.4.8, or 0.4.5.7) as they become available + to you. + + This release also updates our GeoIP data source, and fixes a few + smaller bugs in earlier releases. + + o Major bugfixes (security, denial of service): + - Disable the dump_desc() function that we used to dump unparseable + information to disk. It was called incorrectly in several places, + in a way that could lead to excessive CPU usage. Fixes bug 40286; + bugfix on 0.2.2.1-alpha. This bug is also tracked as TROVE-2021- + 001 and CVE-2021-28089. + - Fix a bug in appending detached signatures to a pending consensus + document that could be used to crash a directory authority. Fixes + bug 40316; bugfix on 0.2.2.6-alpha. Tracked as TROVE-2021-002 + and CVE-2021-28090. + + o Minor features (geoip data): + - We have switched geoip data sources. Previously we shipped IP-to- + country mappings from Maxmind's GeoLite2, but in 2019 they changed + their licensing term, so we were unable to update them after that + point. We now ship geoip files based on the IPFire Location + Database instead. (See https://location.ipfire.org/ for more + information). This release updates our geoip files to match the + IPFire Location Database as retrieved on 2021/03/12. Closes + ticket 40224. + + o Minor bugfixes (directory authority): + - Now that exit relays don't allow exit connections to directory + authority DirPorts (to prevent network reentry), disable + authorities' reachability self test on the DirPort. Fixes bug + 40287; bugfix on 0.4.5.5-rc. + + o Minor bugfixes (documentation): + - Fix a formatting error in the documentation for + VirtualAddrNetworkIPv6. Fixes bug 40256; bugfix on 0.2.9.4-alpha. + + o Minor bugfixes (Linux, relay): + - Fix a bug in determining total available system memory that would + have been triggered if the format of Linux's /proc/meminfo file + had ever changed to include "MemTotal:" in the middle of a line. + Fixes bug 40315; bugfix on 0.2.5.4-alpha. + + o Minor bugfixes (metrics port): + - Fix a BUG() warning on the MetricsPort for an internal missing + handler. Fixes bug 40295; bugfix on 0.4.5.1-alpha. + + o Minor bugfixes (onion service): + - Remove a harmless BUG() warning when reloading tor configured with + onion services. Fixes bug 40334; bugfix on 0.4.5.1-alpha. + + o Minor bugfixes (portability): + - Fix a non-portable usage of "==" with "test" in the configure + script. Fixes bug 40298; bugfix on 0.4.5.1-alpha. + + o Minor bugfixes (relay): + - Remove a spammy log notice falsely claiming that the IPv4/v6 + address was missing. Fixes bug 40300; bugfix on 0.4.5.1-alpha. + - Do not query the address cache early in the boot process when + deciding if we a relay needs to fetch early directory information + from an authority. This bug resulted in a relay falsely believing + it didn't have an address and thus triggering an authority fetch + at each boot. Related to our fix for 40300. + + o Removed features (mallinfo deprecated): + - Remove mallinfo() usage entirely. Libc 2.33+ now deprecates it. + Closes ticket 40309. + + Changes in version 0.4.5.6 - 2021-02-15 The Tor 0.4.5.x release series is dedicated to the memory of Karsten Loesing (1979-2020), Tor developer, cypherpunk, husband, and father. diff --git a/changes/bug40256_045 b/changes/bug40256_045 deleted file mode 100644 index 14e67659e0..0000000000 --- a/changes/bug40256_045 +++ /dev/null @@ -1,3 +0,0 @@ - o Minor bugfixes (documentation): - - Fix a formatting error on the documentation for - VirtualAddrNetworkIPv6. Fixes bug 40256; bugfix on 0.2.9.4-alpha. diff --git a/changes/bug40287 b/changes/bug40287 deleted file mode 100644 index 5a9c899d52..0000000000 --- a/changes/bug40287 +++ /dev/null @@ -1,4 +0,0 @@ - o Minor bugfixes (directory authority): - - Now that exit relays don't allow exit connections to directory authority - DirPorts (network reentry), disable authorities' reachability self test - on the DirPort. Fixes bug 40287; bugfix on 0.4.5.5-rc. diff --git a/changes/bug40298 b/changes/bug40298 deleted file mode 100644 index 8b8b0bbc12..0000000000 --- a/changes/bug40298 +++ /dev/null @@ -1,3 +0,0 @@ - o Minor bugfixes (portability): - - Fix a non-portable usage of "==" with "test" in the configure script. - Fixes bug 40298; bugfix on 0.4.5.1-alpha. diff --git a/changes/bug40315 b/changes/bug40315 deleted file mode 100644 index 9e9c740d96..0000000000 --- a/changes/bug40315 +++ /dev/null @@ -1,5 +0,0 @@ - o Minor bugfixes (Linux, relay): - - Fix a bug in determining total available system memory that would have - been triggered if the format of /proc/meminfo had ever changed - to include "MemTotal:" in the middle of a line. Fixes bug 40315; - bugfix on 0.2.5.4-alpha. diff --git a/changes/bug40316 b/changes/bug40316 deleted file mode 100644 index cd275b5c9c..0000000000 --- a/changes/bug40316 +++ /dev/null @@ -1,5 +0,0 @@ - o Major bugfixes (security, denial of service): - - Fix a bug in appending detached signatures to a pending consensus - document that could be used to crash a directory authority. - Fixes bug 40316; bugfix on 0.2.2.6-alpha. Tracked as - TROVE-2021-002 and CVE-2021-28090. diff --git a/changes/geoip-2021-03-12 b/changes/geoip-2021-03-12 deleted file mode 100644 index 01c1b0f162..0000000000 --- a/changes/geoip-2021-03-12 +++ /dev/null @@ -1,9 +0,0 @@ - o Minor features (geoip data): - - We have switched geoip data sources. Previously we shipped - IP-to-country mappings from Maxmind's GeoLite2, but in 2019 they - changed their licensing term, so we were unable to update them after - that point. We now ship geoip files based on the IPFire Location - Database instead. (See https://location.ipfire.org/ for more - information). This release updates our geoip files to match the - IPFire Location Database as retrieved on 2021/03/12. Closes - ticket 40224. diff --git a/changes/ticket40286_minimal b/changes/ticket40286_minimal deleted file mode 100644 index 6a04ca79eb..0000000000 --- a/changes/ticket40286_minimal +++ /dev/null @@ -1,6 +0,0 @@ - o Major bugfixes (security, denial of service): - - Disable the dump_desc() function that we used to dump unparseable - information to disk. It was called incorrectly in several places, - in a way that could lead to excessive CPU usage. Fixes bug 40286; - bugfix on 0.2.2.1-alpha. This bug is also tracked as - TROVE-2021-001 and CVE-2021-28089. diff --git a/changes/ticket40295 b/changes/ticket40295 deleted file mode 100644 index e6dba80120..0000000000 --- a/changes/ticket40295 +++ /dev/null @@ -1,3 +0,0 @@ - o Minor bugfixes (metrics port): - - Fix a BUG() on the MetricsPort for an internal missing handler. Fixes bug - 40295; bugfix on 0.4.5.1-alpha. diff --git a/changes/ticket40300 b/changes/ticket40300 deleted file mode 100644 index b772ff60a4..0000000000 --- a/changes/ticket40300 +++ /dev/null @@ -1,8 +0,0 @@ - o Minor bugfixes (relay): - - Remove a spammy log notice that should not have been indicating the - operator that its IPv4/v6 was missing but it was not. Fixes bug 40300; - bugfix on 0.4.5.1-alpha. - - Do not query the address cache early in the boot process when deciding - if we a relay needs to fetch early directory information from an - authority. This resulted in a relay falsely believing it didn't have an - address and thus triggering an authority fetch at each boot. diff --git a/changes/ticket40309 b/changes/ticket40309 deleted file mode 100644 index 087ac36a4f..0000000000 --- a/changes/ticket40309 +++ /dev/null @@ -1,3 +0,0 @@ - o New system requirements (mallinfo() deprecated): - - Remove mallinfo() usage entirely. Libc 2.33+ now deprecates it. Closes - ticket 40309. diff --git a/changes/ticket40334 b/changes/ticket40334 deleted file mode 100644 index c1c34384a0..0000000000 --- a/changes/ticket40334 +++ /dev/null @@ -1,3 +0,0 @@ - o Minor bugfixes (onion service): - - Remove a harmless BUG() warning when reloading tor configured with onion - services. Fixes bug 40334; bugfix on 0.4.5.1-alpha.

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[tor/release-0.4.5] copy 0.4.5.7 changelog to releasenotes
by nickm＠torproject.org 16 Mar '21

16 Mar '21

commit 83f895c015de55201e5f226f84a866f30f5ee14b Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Mar 16 08:27:52 2021 -0400 copy 0.4.5.7 changelog to releasenotes --- ReleaseNotes | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/ReleaseNotes b/ReleaseNotes index 47a673b90a..0b0e0912b1 100644 --- a/ReleaseNotes +++ b/ReleaseNotes @@ -2,6 +2,91 @@ This document summarizes new features and bugfixes in each stable release of Tor. If you want to see more detailed descriptions of the changes in each development snapshot, see the ChangeLog file. +Changes in version 0.4.5.7 - 2021-03-16 + Tor 0.4.5.7 fixes two important denial-of-service bugs in earlier + versions of Tor. + + One of these vulnerabilities (TROVE-2021-001) would allow an attacker + who can send directory data to a Tor instance to force that Tor + instance to consume huge amounts of CPU. This is easiest to exploit + against authorities, since anybody can upload to them, but directory + caches could also exploit this vulnerability against relays or clients + when they download. The other vulnerability (TROVE-2021-002) only + affects directory authorities, and would allow an attacker to remotely + crash the authority with an assertion failure. Patches have already + been provided to the authority operators, to help ensure + network stability. + + We recommend that everybody upgrade to one of the releases that fixes + these issues (0.3.5.14, 0.4.4.8, or 0.4.5.7) as they become available + to you. + + This release also updates our GeoIP data source, and fixes a few + smaller bugs in earlier releases. + + o Major bugfixes (security, denial of service): + - Disable the dump_desc() function that we used to dump unparseable + information to disk. It was called incorrectly in several places, + in a way that could lead to excessive CPU usage. Fixes bug 40286; + bugfix on 0.2.2.1-alpha. This bug is also tracked as TROVE-2021- + 001 and CVE-2021-28089. + - Fix a bug in appending detached signatures to a pending consensus + document that could be used to crash a directory authority. Fixes + bug 40316; bugfix on 0.2.2.6-alpha. Tracked as TROVE-2021-002 + and CVE-2021-28090. + + o Minor features (geoip data): + - We have switched geoip data sources. Previously we shipped IP-to- + country mappings from Maxmind's GeoLite2, but in 2019 they changed + their licensing terms, so we were unable to update them after that + point. We now ship geoip files based on the IPFire Location + Database instead. (See https://location.ipfire.org/ for more + information). This release updates our geoip files to match the + IPFire Location Database as retrieved on 2021/03/12. Closes + ticket 40224. + + o Minor bugfixes (directory authority): + - Now that exit relays don't allow exit connections to directory + authority DirPorts (to prevent network reentry), disable + authorities' reachability self test on the DirPort. Fixes bug + 40287; bugfix on 0.4.5.5-rc. + + o Minor bugfixes (documentation): + - Fix a formatting error in the documentation for + VirtualAddrNetworkIPv6. Fixes bug 40256; bugfix on 0.2.9.4-alpha. + + o Minor bugfixes (Linux, relay): + - Fix a bug in determining total available system memory that would + have been triggered if the format of Linux's /proc/meminfo file + had ever changed to include "MemTotal:" in the middle of a line. + Fixes bug 40315; bugfix on 0.2.5.4-alpha. + + o Minor bugfixes (metrics port): + - Fix a BUG() warning on the MetricsPort for an internal missing + handler. Fixes bug 40295; bugfix on 0.4.5.1-alpha. + + o Minor bugfixes (onion service): + - Remove a harmless BUG() warning when reloading tor configured with + onion services. Fixes bug 40334; bugfix on 0.4.5.1-alpha. + + o Minor bugfixes (portability): + - Fix a non-portable usage of "==" with "test" in the configure + script. Fixes bug 40298; bugfix on 0.4.5.1-alpha. + + o Minor bugfixes (relay): + - Remove a spammy log notice falsely claiming that the IPv4/v6 + address was missing. Fixes bug 40300; bugfix on 0.4.5.1-alpha. + - Do not query the address cache early in the boot process when + deciding if a relay needs to fetch early directory information + from an authority. This bug resulted in a relay falsely believing + it didn't have an address and thus triggering an authority fetch + at each boot. Related to our fix for 40300. + + o Removed features (mallinfo deprecated): + - Remove mallinfo() usage entirely. Libc 2.33+ now deprecates it. + Closes ticket 40309. + + Changes in version 0.4.5.6 - 2021-02-15 The Tor 0.4.5.x release series is dedicated to the memory of Karsten Loesing (1979-2020), Tor developer, cypherpunk, husband, and father.

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