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@@ -1,3 +1,694 @@ +Changes in version 0.3.5.11 - 2020-07-09 + Tor 0.3.5.11 backports fixes from later tor releases, including several + usability, portability, and reliability fixes. + + This release also fixes TROVE-2020-001, a medium-severity denial of + service vulnerability affecting all versions of Tor when compiled with + the NSS encryption library. (This is not the default configuration.) + Using this vulnerability, an attacker could cause an affected Tor + instance to crash remotely. This issue is also tracked as CVE-2020- + 15572. Anybody running a version of Tor built with the NSS library + should upgrade to 0.3.5.11, 0.4.2.8, 0.4.3.6, or 0.4.4.2-alpha + or later. + + o Major bugfixes (NSS, security, backport from 0.4.4.2-alpha): + - Fix a crash due to an out-of-bound memory access when Tor is + compiled with NSS support. Fixes bug 33119; bugfix on + 0.3.5.1-alpha. This issue is also tracked as TROVE-2020-001 + and CVE-2020-15572. + + o Major bugfixes (DoS defenses, bridges, pluggable transport, backport from 0.4.3.4-rc): + - Fix a bug that was preventing DoS defenses from running on bridges + with a pluggable transport. Previously, the DoS subsystem was not + given the transport name of the client connection, thus failed to + find the GeoIP cache entry for that client address. Fixes bug + 33491; bugfix on 0.3.3.2-alpha. + + o Minor features (testing, backport from 0.4.3.4-rc): + - The unit tests now support a "TOR_SKIP_TESTCASES" environment + variable to specify a list of space-separated test cases that + should not be executed. We will use this to disable certain tests + that are failing on Appveyor because of mismatched OpenSSL + libraries. Part of ticket 33643. + + o Minor bugfix (CI, Windows, backport from 0.4.4.2-alpha): + - Use the correct 64-bit printf format when compiling with MINGW on + Appveyor. Fixes bug 40026; bugfix on 0.3.5.5-alpha. + + o Minor bugfix (relay, configuration, backport from 0.4.3.3-alpha): + - Warn if the ContactInfo field is not set, and tell the relay + operator that not having a ContactInfo field set might cause their + relay to get rejected in the future. Fixes bug 33361; bugfix + on 0.1.1.10-alpha. + + o Minor bugfixes (client performance, backport from 0.4.4.1-alpha): + - Resume use of preemptively-built circuits when UseEntryGuards is set + to 0. We accidentally disabled this feature with that config + setting, leading to slower load times. Fixes bug 34303; bugfix + on 0.3.3.2-alpha. + + o Minor bugfixes (compiler compatibility, backport from 0.4.3.5): + - Avoid compiler warnings from Clang 10 related to the use of GCC- + style "/* falls through */" comments. Both Clang and GCC allow + __attribute__((fallthrough)) instead, so that's what we're using + now. Fixes bug 34078; bugfix on 0.3.1.3-alpha. + + o Minor bugfixes (compiler warnings, backport from 0.4.4.2-alpha): + - Fix a compiler warning on platforms with 32-bit time_t values. + Fixes bug 40028; bugfix on 0.3.2.8-rc. + + o Minor bugfixes (embedded Tor, backport from 0.4.3.1-alpha): + - When starting Tor any time after the first time in a process, + register the thread in which it is running as the main thread. + Previously, we only did this on Windows, which could lead to bugs + like 23081 on non-Windows platforms. Fixes bug 32884; bugfix + on 0.3.3.1-alpha. + + o Minor bugfixes (key portability, backport from 0.4.3.4-rc): + - When reading PEM-encoded key data, tolerate CRLF line-endings even + if we are not running on Windows. Previously, non-Windows hosts + would reject these line-endings in certain positions, making + certain key files hard to move from one host to another. Fixes bug + 33032; bugfix on 0.3.5.1-alpha. + + o Minor bugfixes (logging, backport from 0.4.4.2-alpha): + - Downgrade a noisy log message that could occur naturally when + receiving an extrainfo document that we no longer want. Fixes bug + 16016; bugfix on 0.2.6.3-alpha. + + o Minor bugfixes (onion service v3, client, backport from 0.4.3.3-alpha): + - Remove a BUG() warning that would cause a stack trace if an onion + service descriptor was freed while we were waiting for a + rendezvous circuit to complete. Fixes bug 28992; bugfix + on 0.3.2.1-alpha. + + o Testing (CI, backport from 0.4.3.4-rc): + - In our Appveyor Windows CI, copy required DLLs to test and app + directories, before running tor's tests. This ensures that tor.exe + and test*.exe use the correct version of each DLL. This fix is not + required, but we hope it will avoid DLL search issues in future. + Fixes bug 33673; bugfix on 0.3.4.2-alpha. + - On Appveyor, skip the crypto/openssl_version test, which is + failing because of a mismatched library installation. Fix + for 33643. + + +Changes in version 0.4.2.8 - 2020-07-09 + Tor 0.4.2.8 backports various fixes from later releases, including + several that affect usability and portability. + + This release also fixes TROVE-2020-001, a medium-severity denial of + service vulnerability affecting all versions of Tor when compiled with + the NSS encryption library. (This is not the default configuration.) + Using this vulnerability, an attacker could cause an affected Tor + instance to crash remotely. This issue is also tracked as CVE-2020- + 15572. Anybody running a version of Tor built with the NSS library + should upgrade to 0.3.5.11, 0.4.2.8, 0.4.3.6, or 0.4.4.2-alpha + or later. + + o Major bugfixes (NSS, security, backport from 0.4.4.2-alpha): + - Fix a crash due to an out-of-bound memory access when Tor is + compiled with NSS support. Fixes bug 33119; bugfix on + 0.3.5.1-alpha. This issue is also tracked as TROVE-2020-001 + and CVE-2020-15572. + + o Major bugfixes (DoS defenses, bridges, pluggable transport, backport from 0.4.3.4-rc): + - Fix a bug that was preventing DoS defenses from running on bridges + with a pluggable transport. Previously, the DoS subsystem was not + given the transport name of the client connection, thus failed to + find the GeoIP cache entry for that client address. Fixes bug + 33491; bugfix on 0.3.3.2-alpha. + + o Minor feature (sendme, flow control, backport form 0.4.3.4-rc): + - Default to sending SENDME version 1 cells. (Clients are already + sending these, because of a consensus parameter telling them to do + so: this change only affects what clients would do if the + consensus didn't contain a recommendation.) Closes ticket 33623. + + o Minor features (diagnostic, backport from 0.4.3.3-alpha): + - Improve assertions and add some memory-poisoning code to try to + track down possible causes of a rare crash (32564) in the EWMA + code. Closes ticket 33290. + + o Minor features (testing, backport from 0.4.3.4-rc): + - The unit tests now support a "TOR_SKIP_TESTCASES" environment + variable to specify a list of space-separated test cases that + should not be executed. We will use this to disable certain tests + that are failing on Appveyor because of mismatched OpenSSL + libraries. Part of ticket 33643. + + o Minor bugfix (CI, Windows, backport from 0.4.4.2-alpha): + - Use the correct 64-bit printf format when compiling with MINGW on + Appveyor. Fixes bug 40026; bugfix on 0.3.5.5-alpha. + + o Minor bugfix (relay, configuration, backport from 0.4.3.3-alpha): + - Warn if the ContactInfo field is not set, and tell the relay + operator that not having a ContactInfo field set might cause their + relay to get rejected in the future. Fixes bug 33361; bugfix + on 0.1.1.10-alpha. + + o Minor bugfixes (client performance, backport from 0.4.4.1-alpha): + - Resume use of preemptively-built circuits when UseEntryGuards is set + to 0. We accidentally disabled this feature with that config + setting, leading to slower load times. Fixes bug 34303; bugfix + on 0.3.3.2-alpha. + + o Minor bugfixes (compiler compatibility, backport from 0.4.3.5): + - Avoid compiler warnings from Clang 10 related to the use of GCC- + style "/* falls through */" comments. Both Clang and GCC allow + __attribute__((fallthrough)) instead, so that's what we're using + now. Fixes bug 34078; bugfix on 0.3.1.3-alpha. + - Fix compilation warnings with GCC 10.0.1. Fixes bug 34077; bugfix + on 0.4.0.3-alpha. + + o Minor bugfixes (compiler warnings, backport from 0.4.4.2-alpha): + - Fix a compiler warning on platforms with 32-bit time_t values. + Fixes bug 40028; bugfix on 0.3.2.8-rc. + + o Minor bugfixes (controller protocol, backport from 0.4.3.2-alpha): + - When receiving "ACTIVE" or "DORMANT" signals on the control port, + report them as SIGNAL events. Previously we would log a bug + warning. Fixes bug 33104; bugfix on 0.4.0.1-alpha. + + o Minor bugfixes (embedded Tor, backport from 0.4.3.1-alpha): + - When starting Tor any time after the first time in a process, + register the thread in which it is running as the main thread. + Previously, we only did this on Windows, which could lead to bugs + like 23081 on non-Windows platforms. Fixes bug 32884; bugfix + on 0.3.3.1-alpha. + + o Minor bugfixes (key portability, backport from 0.4.3.4-rc): + - When reading PEM-encoded key data, tolerate CRLF line-endings even + if we are not running on Windows. Previously, non-Windows hosts + would reject these line-endings in certain positions, making + certain key files hard to move from one host to another. Fixes bug + 33032; bugfix on 0.3.5.1-alpha. + + o Minor bugfixes (logging, backport from 0.4.3.2-rc): + - When logging a bug, do not say "Future instances of this warning + will be silenced" unless we are actually going to silence them. + Previously we would say this whenever a BUG() check failed in the + code. Fixes bug 33095; bugfix on 0.4.1.1-alpha. + + o Minor bugfixes (logging, backport from 0.4.3.4-rc): + - Flush stderr, stdout, and file logs during shutdown, if supported + by the OS. This change helps make sure that any final logs are + recorded. Fixes bug 33087; bugfix on 0.4.1.6. + + o Minor bugfixes (logging, backport from 0.4.4.2-alpha): + - Downgrade a noisy log message that could occur naturally when + receiving an extrainfo document that we no longer want. Fixes bug + 16016; bugfix on 0.2.6.3-alpha. + + o Minor bugfixes (onion service v3, client, backport from 0.4.3.3-alpha): + - Remove a BUG() warning that would cause a stack trace if an onion + service descriptor was freed while we were waiting for a + rendezvous circuit to complete. Fixes bug 28992; bugfix + on 0.3.2.1-alpha. + + o Testing (CI, backport from 0.4.3.4-rc): + - In our Appveyor Windows CI, copy required DLLs to test and app + directories, before running tor's tests. This ensures that tor.exe + and test*.exe use the correct version of each DLL. This fix is not + required, but we hope it will avoid DLL search issues in future. + Fixes bug 33673; bugfix on 0.3.4.2-alpha. + - On Appveyor, skip the crypto/openssl_version test, which is + failing because of a mismatched library installation. Fix + for 33643. + + +Changes in version 0.4.3.6 - 2020-07-09 + Tor 0.4.3.6 backports several bugfixes from later releases, including + some affecting usability. + + This release also fixes TROVE-2020-001, a medium-severity denial of + service vulnerability affecting all versions of Tor when compiled with + the NSS encryption library. (This is not the default configuration.) + Using this vulnerability, an attacker could cause an affected Tor + instance to crash remotely. This issue is also tracked as CVE-2020- + 15572. Anybody running a version of Tor built with the NSS library + should upgrade to 0.3.5.11, 0.4.2.8, 0.4.3.6, or 0.4.4.2-alpha + or later. + + o Major bugfixes (NSS, security, backport from 0.4.4.2-alpha): + - Fix a crash due to an out-of-bound memory access when Tor is + compiled with NSS support. Fixes bug 33119; bugfix on + 0.3.5.1-alpha. This issue is also tracked as TROVE-2020-001 + and CVE-2020-15572. + + o Minor bugfix (CI, Windows, backport from 0.4.4.2-alpha): + - Use the correct 64-bit printf format when compiling with MINGW on + Appveyor. Fixes bug 40026; bugfix on 0.3.5.5-alpha. + + o Minor bugfixes (client performance, backport from 0.4.4.1-alpha): + - Resume use of preemptively-built circuits when UseEntryGuards is set + to 0. We accidentally disabled this feature with that config + setting, leading to slower load times. Fixes bug 34303; bugfix + on 0.3.3.2-alpha. + + o Minor bugfixes (compiler warnings, backport from 0.4.4.2-alpha): + - Fix a compiler warning on platforms with 32-bit time_t values. + Fixes bug 40028; bugfix on 0.3.2.8-rc. + + o Minor bugfixes (linux seccomp sandbox, nss, backport from 0.4.4.1-alpha): + - Fix a startup crash when tor is compiled with --enable-nss and + sandbox support is enabled. Fixes bug 34130; bugfix on + 0.3.5.1-alpha. Patch by Daniel Pinto. + + o Minor bugfixes (logging, backport from 0.4.4.2-alpha): + - Downgrade a noisy log message that could occur naturally when + receiving an extrainfo document that we no longer want. Fixes bug + 16016; bugfix on 0.2.6.3-alpha. + + o Minor bugfixes (manual page, backport from 0.4.4.1-alpha): + - Update the man page to reflect that MinUptimeHidServDirectoryV2 + defaults to 96 hours. Fixes bug 34299; bugfix on 0.2.6.3-alpha. + + o Minor bugfixes (onion service v3, backport from 0.4.4.1-alpha): + - Prevent an assert() that would occur when cleaning the client + descriptor cache, and attempting to close circuits for a non- + decrypted descriptor (lacking client authorization). Fixes bug + 33458; bugfix on 0.4.2.1-alpha. + + o Minor bugfixes (portability, backport from 0.4.4.1-alpha): + - Fix a portability error in the configure script, where we were + using "==" instead of "=". Fixes bug 34233; bugfix on 0.4.3.5. + + o Minor bugfixes (relays, backport from 0.4.4.1-alpha): + - Stop advertising incorrect IPv6 ORPorts in relay and bridge + descriptors, when the IPv6 port was configured as "auto". Fixes + bug 32588; bugfix on 0.2.3.9-alpha. + + o Documentation (backport from 0.4.4.1-alpha): + - Fix several doxygen warnings related to imbalanced groups. Closes + ticket 34255. + + +Changes in version 0.4.4.2-alpha - 2020-07-09 + This is the second alpha release in the 0.4.4.x series. It fixes a few + bugs in the previous release, and solves a few usability, + compatibility, and portability issues. + + This release also fixes TROVE-2020-001, a medium-severity denial of + service vulnerability affecting all versions of Tor when compiled with + the NSS encryption library. (This is not the default configuration.) + Using this vulnerability, an attacker could cause an affected Tor + instance to crash remotely. This issue is also tracked as CVE-2020- + 15572. Anybody running a version of Tor built with the NSS library + should upgrade to 0.3.5.11, 0.4.2.8, 0.4.3.6, or 0.4.4.2-alpha + or later. + + o Major bugfixes (NSS, security): + - Fix a crash due to an out-of-bound memory access when Tor is + compiled with NSS support. Fixes bug 33119; bugfix on + 0.3.5.1-alpha. This issue is also tracked as TROVE-2020-001 + and CVE-2020-15572. + + o Minor features (bootstrap reporting): + - Report more detailed reasons for bootstrap failure when the + failure happens due to a TLS error. Previously we would just call + these errors "MISC" when they happened during read, and "DONE" + when they happened during any other TLS operation. Closes + ticket 32622. + + o Minor features (directory authority): + - Authorities now recommend the protocol versions that are supported + by Tor 0.3.5 and later. (Earlier versions of Tor have been + deprecated since January of this year.) This recommendation will + cause older clients and relays to give a warning on startup, or + when they download a consensus directory. Closes ticket 32696. + + o Minor features (entry guards): + - Reinstate support for GUARD NEW/UP/DOWN control port events. + Closes ticket 40001. + + o Minor features (linux seccomp2 sandbox, portability): + - Allow Tor to build on platforms where it doesn't know how to + report which syscall caused the linux seccomp2 sandbox to fail. + This change should make the sandbox code more portable to less + common Linux architectures. Closes ticket 34382. + - Permit the unlinkat() syscall, which some Libc implementations use + to implement unlink(). Closes ticket 33346. + + o Minor bugfix (CI, Windows): + - Use the correct 64-bit printf format when compiling with MINGW on + Appveyor. Fixes bug 40026; bugfix on 0.3.5.5-alpha. + + o Minor bugfix (onion service v3 client): + - Remove a BUG() warning that could occur naturally. Fixes bug + 34087; bugfix on 0.3.2.1-alpha. + + o Minor bugfix (SOCKS, onion service client): + - Detect v3 onion service addresses of the wrong length when + returning the F6 ExtendedErrors code. Fixes bug 33873; bugfix + on 0.4.3.1-alpha. + + o Minor bugfixes (compiler warnings): + - Fix a compiler warning on platforms with 32-bit time_t values. + Fixes bug 40028; bugfix on 0.3.2.8-rc. + + o Minor bugfixes (control port, onion service): + - Consistently use 'address' in "Invalid v3 address" response to + ONION_CLIENT_AUTH commands. Previously, we would sometimes say + 'addr'. Fixes bug 40005; bugfix on 0.4.3.1-alpha. + + o Minor bugfixes (logging): + - Downgrade a noisy log message that could occur naturally when + receiving an extrainfo document that we no longer want. Fixes bug + 16016; bugfix on 0.2.6.3-alpha. + + o Minor bugfixes (onion services v3): + - Avoid a non-fatal assertion failure in certain edge-cases when + opening an intro circuit as a client. Fixes bug 34084; bugfix + on 0.3.2.1-alpha. + + o Deprecated features (onion service v2): + - Add a deprecation warning for version 2 onion services. Closes + ticket 40003. + + o Removed features (IPv6, revert): + - Revert the change in the default value of ClientPreferIPv6OrPort: + it breaks the torsocks use case. The SOCKS resolve command has no + mechanism to ask for a specific address family (v4 or v6), and so + prioritizing IPv6 when an IPv4 address is requested on the SOCKS + interface resulted in a failure. Tor Browser explicitly sets + PreferIPv6, so this should not affect the majority of our users. + Closes ticket 33796; bugfix on 0.4.4.1-alpha. + + +Changes in version 0.4.4.1-alpha - 2020-06-16 + This is the first alpha release in the 0.4.4.x series. It improves + our guard selection algorithms, improves the amount of code that + can be disabled when running without relay support, and includes numerous + small bugfixes and enhancements. It also lays the ground for some IPv6 + features that we'll be developing more in the next (0.4.5) series. + + Here are the changes since 0.4.3.5. + + o Major features (Proposal 310, performance + security): + - Implements Proposal 310, "Bandaid on guard selection". Proposal + 310 solves load-balancing issues with older versions of the guard + selection algorithm, and improves its security. Under this new + algorithm, a newly selected guard never becomes Primary unless all + previously sampled guards are unreachable. Implements + recommendation from 32088. (Proposal 310 is linked to the CLAPS + project researching optimal client location-aware path selections. + This project is a collaboration between the UCLouvain Crypto Group, + the U.S. Naval Research Laboratory, and Princeton University.) + + o Major features (IPv6, relay): + - Consider IPv6-only EXTEND2 cells valid on relays. Log a protocol + warning if the IPv4 or IPv6 address is an internal address, and + internal addresses are not allowed. But continue to use the other + address, if it is valid. Closes ticket 33817. + - If a relay can extend over IPv4 and IPv6, and both addresses are + provided, it chooses between them uniformly at random. Closes + ticket 33817. + - Re-use existing IPv6 connections for circuit extends. Closes + ticket 33817. + - Relays may extend circuits over IPv6, if the relay has an IPv6 + ORPort, and the client supplies the other relay's IPv6 ORPort in + the EXTEND2 cell. IPv6 extends will be used by the relay IPv6 + ORPort self-tests in 33222. Closes ticket 33817. + + o Major features (v3 onion services): + - Allow v3 onion services to act as OnionBalance backend instances, + by using the HiddenServiceOnionBalanceInstance torrc option. + Closes ticket 32709. + + o Minor feature (developer tools): + - Add a script to help check the alphabetical ordering of option + names in the manual page. Closes ticket 33339. + + o Minor feature (onion service client, SOCKS5): + - Add 3 new SocksPort ExtendedErrors (F2, F3, F7) that reports back + new type of onion service connection failures. The semantics of + these error codes are documented in proposal 309. Closes + ticket 32542. + + o Minor feature (onion service v3): + - If a service cannot upload its descriptor(s), log why at INFO + level. Closes ticket 33400; bugfix on 0.3.2.1-alpha. + + o Minor feature (python scripts): + - Stop assuming that /usr/bin/python exists. Instead of using a + hardcoded path in scripts that still use Python 2, use + /usr/bin/env, similarly to the scripts that use Python 3. Fixes + bug 33192; bugfix on 0.4.2. + + o Minor features (client-only compilation): + - Disable more code related to the ext_orport protocol when + compiling without support for relay mode. Closes ticket 33368. + - Disable more of our self-testing code when support for relay mode + is disabled. Closes ticket 33370. + + o Minor features (code safety): + - Check for failures of tor_inet_ntop() and tor_inet_ntoa() + functions in DNS and IP address processing code, and adjust + codepaths to make them less likely to crash entire Tor instances. + Resolves issue 33788. + + o Minor features (compilation size): + - Most server-side DNS code is now disabled when building without + support for relay mode. Closes ticket 33366. + + o Minor features (continuous integration): + - Run unit-test and integration test (Stem, Chutney) jobs with + ALL_BUGS_ARE_FATAL macro being enabled on Travis and Appveyor. + Resolves ticket 32143. + + o Minor features (control port): + - Return a descriptive error message from the 'GETINFO status/fresh- + relay-descs' command on the control port. Previously, we returned + a generic error of "Error generating descriptor". Closes ticket + 32873. Patch by Neel Chauhan. + + o Minor features (developer tooling): + - Refrain from listing all .a files that are generated by the Tor + build in .gitignore. Add a single wildcard *.a entry that covers + all of them for present and future. Closes ticket 33642. + - Add a script ("git-install-tools.sh") to install git hooks and + helper scripts. Closes ticket 33451. + + o Minor features (directory authority, shared random): + - Refactor more authority-only parts of the shared-random scheduling + code to reside in the dirauth module, and to be disabled when + compiling with --disable-module-dirauth. Closes ticket 33436. + + o Minor features (directory): + - Remember the number of bytes we have downloaded for each directory + purpose while bootstrapping, and while fully bootstrapped. Log + this information as part of the heartbeat message. Closes + ticket 32720. + + o Minor features (IPv6 support): + - Adds IPv6 support to tor_addr_is_valid(). Adds tests for the above + changes and tor_addr_is_null(). Closes ticket 33679. Patch + by MrSquanchee. + - Allow clients and relays to send dual-stack and IPv6-only EXTEND2 + cells. Parse dual-stack and IPv6-only EXTEND2 cells on relays. + Closes ticket 33901. + + o Minor features (logging): + - When trying to find our own address, add debug-level logging to + report the sources of candidate addresses. Closes ticket 32888. + + o Minor features (testing, architecture): + - Our test scripts now double-check that subsystem initialization + order is consistent with the inter-module dependencies established + by our .may_include files. Implements ticket 31634. + - Initialize all subsystems at the beginning of our unit test + harness, to avoid crashes due to uninitialized subsystems. Follow- + up from ticket 33316. + + o Minor features (v3 onion services): + - Add v3 onion service status to the dumpstats() call which is + triggered by a SIGUSR1 signal. Previously, we only did v2 onion + services. Closes ticket 24844. Patch by Neel Chauhan. + + o Minor features (windows): + - Add support for console control signals like Ctrl+C in Windows. + Closes ticket 34211. Patch from Damon Harris (TheDcoder). + + o Minor bugfix (onion service v3): + - Prevent an assert() that would occur when cleaning the client + descriptor cache, and attempting to close circuits for a non- + decrypted descriptor (lacking client authorization). Fixes bug + 33458; bugfix on 0.4.2.1-alpha. + + o Minor bugfix (refactoring): + - Lift circuit_build_times_disabled() out of the + circuit_expire_building() loop, to save CPU time when there are + many circuits open. Fixes bug 33977; bugfix on 0.3.5.9. + + o Minor bugfixes (client performance): + - Resume use of preemptively-built circuits when UseEntryGuards is set + to 0. We accidentally disabled this feature with that config + setting, leading to slower load times. Fixes bug 34303; bugfix + on 0.3.3.2-alpha. + + o Minor bugfixes (directory authorities): + - Directory authorities now reject votes that arrive too late. In + particular, once an authority has started fetching missing votes, + it no longer accepts new votes posted by other authorities. This + change helps prevent a consensus split, where only some authorities + have the late vote. Fixes bug 4631; bugfix on 0.2.0.5-alpha. + + o Minor bugfixes (git scripts): + - Stop executing the checked-out pre-commit hook from the pre-push + hook. Instead, execute the copy in the user's git directory. Fixes + bug 33284; bugfix on 0.4.1.1-alpha. + + o Minor bugfixes (initialization): + - Initialize the subsystems in our code in an order more closely + corresponding to their dependencies, so that every system is + initialized before the ones that (theoretically) depend on it. + Fixes bug 33316; bugfix on 0.4.0.1-alpha. + + o Minor bugfixes (IPv4, relay): + - Check for invalid zero IPv4 addresses and ports when sending and + receiving extend cells. Fixes bug 33900; bugfix on 0.2.4.8-alpha. + + o Minor bugfixes (IPv6, relay): + - Consider IPv6 addresses when checking if a connection is + canonical. In 17604, relays assumed that a remote relay could + consider an IPv6 connection canonical, but did not set the + canonical flag on their side of the connection. Fixes bug 33899; + bugfix on 0.3.1.1-alpha. + - Log IPv6 addresses on connections where this relay is the + responder. Previously, responding relays would replace the remote + IPv6 address with the IPv4 address from the consensus. Fixes bug + 33899; bugfix on 0.3.1.1-alpha. + + o Minor bugfixes (linux seccomp sandbox nss): + - Fix a startup crash when tor is compiled with --enable-nss and + sandbox support is enabled. Fixes bug 34130; bugfix on + 0.3.5.1-alpha. Patch by Daniel Pinto. + + o Minor bugfixes (logging, testing): + - Make all of tor's assertion macros support the ALL_BUGS_ARE_FATAL + and DISABLE_ASSERTS_IN_UNIT_TESTS debugging modes. (IF_BUG_ONCE() + used to log a non-fatal warning, regardless of the debugging + mode.) Fixes bug 33917; bugfix on 0.2.9.1-alpha. + + o Minor bugfixes (logs): + - Remove surprising empty line in the INFO-level log about circuit + build timeout. Fixes bug 33531; bugfix on 0.3.3.1-alpha. + + o Minor bugfixes (mainloop): + - Better guard against growing a buffer past its maximum 2GB in + size. Fixes bug 33131; bugfix on 0.3.0.4-rc. + + o Minor bugfixes (manual page): + - Update the man page to reflect that MinUptimeHidServDirectoryV2 + defaults to 96 hours. Fixes bug 34299; bugfix on 0.2.6.3-alpha. + + o Minor bugfixes (onion service v3, client): + - Remove a BUG() that was causing a stacktrace when a descriptor + changed at an unexpected time. Fixes bug 28992; bugfix + on 0.3.2.1-alpha. + + o Minor bugfixes (onion service, logging): + - Fix a typo in a log message PublishHidServDescriptors is set to 0. + Fixes bug 33779; bugfix on 0.3.2.1-alpha. + + o Minor bugfixes (portability): + - Fix a portability error in the configure script, where we were + using "==" instead of "=". Fixes bug 34233; bugfix on 0.4.3.5. + + o Minor bugfixes (protocol versions): + - Sort tor's supported protocol version lists, as recommended by the + tor directory specification. Fixes bug 33285; bugfix + on 0.4.0.1-alpha. + + o Minor bugfixes (relays): + - Stop advertising incorrect IPv6 ORPorts in relay and bridge + descriptors, when the IPv6 port was configured as "auto". Fixes + bug 32588; bugfix on 0.2.3.9-alpha. + + o Code simplification and refactoring: + - Define and use a new constant TOR_ADDRPORT_BUF_LEN which is like + TOR_ADDR_BUF_LEN but includes enough space for an IP address, + brackets, separating colon, and port number. Closes ticket 33956. + Patch by Neel Chauhan. + - Merge the orconn and ocirc events into the "core" subsystem, which + manages or connections and origin circuits. Previously they were + isolated in subsystems of their own. + - Move LOG_PROTOCOL_WARN to app/config. Resolves a dependency + inversion. Closes ticket 33633. + - Move the circuit extend code to the relay module. Split the + circuit extend function into smaller functions. Closes + ticket 33633. + - Rewrite port_parse_config() to use the default port flags from + port_cfg_new(). Closes ticket 32994. Patch by MrSquanchee. + - Updated comments in 'scheduler.c' to reflect old code changes, and + simplified the scheduler channel state change code. Closes + ticket 33349. + + o Documentation: + - Document the limitations of using %include on config files with + seccomp sandbox enabled. Fixes documentation bug 34133; bugfix on + 0.3.1.1-alpha. Patch by Daniel Pinto. + - Fix several doxygen warnings related to imbalanced groups. Closes + ticket 34255. + + o Removed features: + - Remove the ClientAutoIPv6ORPort option. This option attempted to + randomly choose between IPv4 and IPv6 for client connections, and + wasn't a true implementation of Happy Eyeballs. Often, this option + failed on IPv4-only or IPv6-only connections. Closes ticket 32905. + Patch by Neel Chauhan. + - Stop shipping contrib/dist/rc.subr file, as it is not being used + on FreeBSD anymore. Closes issue 31576. + + o Testing: + - Add a basic IPv6 test to "make test-network". This test only runs + when the local machine has an IPv6 stack. Closes ticket 33300. + - Add test-network-ipv4 and test-network-ipv6 jobs to the Makefile. + These jobs run the IPv4-only and dual-stack chutney flavours from + test-network-all. Closes ticket 33280. + - Remove a redundant distcheck job. Closes ticket 33194. + - Run the test-network-ipv6 Makefile target in the Travis CI IPv6 + chutney job. This job runs on macOS, so it's a bit slow. Closes + ticket 33303. + - Sort the Travis jobs in order of speed. Putting the slowest jobs + first takes full advantage of Travis job concurrency. Closes + ticket 33194. + - Stop allowing the Chutney IPv6 Travis job to fail. This job was + previously configured to fast_finish (which requires + allow_failure), to speed up the build. Closes ticket 33195. + - Test v3 onion services to tor's mixed IPv4 chutney network. And + add a mixed IPv6 chutney network. These networks are used in the + test-network-all, test-network-ipv4, and test-network-ipv6 make + targets. Closes ticket 33334. + - Use the "bridges+hs-v23" chutney network flavour in "make test- + network". This test requires a recent version of chutney (mid- + February 2020). Closes ticket 28208. + - When a Travis chutney job fails, use chutney's new "diagnostics.sh" + tool to produce detailed diagnostic output. Closes ticket 32792. + + o Code simplification and refactoring (onion service): + - Refactor configuration parsing to use the new config subsystem + code. Closes ticket 33014. + + o Code simplification and refactoring (relay address): + - Move a series of functions related to address resolving into their + own files. Closes ticket 33789. + + o Documentation (manual page): + - Add cross reference links and a table of contents to the HTML tor + manual page. Closes ticket 33369. Work by Swati Thacker as part of + Google Season of Docs. + - Alphabetize the Denial of Service Mitigation Options, Directory + Authority Server Options, Hidden Service Options, and Testing + Network Options sections of the tor(1) manual page. Closes ticket + 33275. Work by Swati Thacker as part of Google Season of Docs. + - Refrain from mentioning nicknames in manpage section for MyFamily + torrc option. Resolves issue 33417. + - Updated the options set by TestingTorNetwork in the manual page. + Closes ticket 33778. + + Changes in version 0.4.3.5 - 2020-05-15 Tor 0.4.3.5 is the first stable release in the 0.4.3.x series. This series adds support for building without relay code enabled, and |