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ChangeLog
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ChangeLog
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Changes in version 0.4.3.4-rc - 2020-04-13
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Tor 0.4.3.4-rc is the first release candidate in its series. It fixes
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several bugs from earlier versions, including one affecting DoS
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defenses on bridges using pluggable transports.
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o Major bugfixes (DoS defenses, bridges, pluggable transport):
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- Fix a bug that was preventing DoS defenses from running on bridges
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with a pluggable transport. Previously, the DoS subsystem was not
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given the transport name of the client connection, thus failed to
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find the GeoIP cache entry for that client address. Fixes bug
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33491; bugfix on 0.3.3.2-alpha.
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o Minor feature (sendme, flow control):
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- Default to sending SENDME version 1 cells. (Clients are already
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sending these, because of a consensus parameter telling them to do
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so: this change only affects what clients would do if the
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consensus didn't contain a recommendation.) Closes ticket 33623.
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o Minor features (testing):
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- The unit tests now support a "TOR_SKIP_TESTCASES" environment
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variable to specify a list of space-separated test cases that
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should not be executed. We will use this to disable certain tests
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that are failing on Appveyor because of mismatched OpenSSL
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libraries. Part of ticket 33643.
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o Minor bugfixes (--disable-module-relay):
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- Fix an assertion failure when Tor is built without the relay
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module, and then invoked with the "User" option. Fixes bug 33668;
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bugfix on 0.4.3.1-alpha.
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o Minor bugfixes (--disable-module-relay,--disable-module-dirauth):
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- Set some output arguments in the relay and dirauth module stubs,
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to guard against future stub argument handling bugs like 33668.
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Fixes bug 33674; bugfix on 0.4.3.1-alpha.
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o Minor bugfixes (build system):
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- Correctly output the enabled module in the configure summary.
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Before that, the list shown was just plain wrong. Fixes bug 33646;
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bugfix on 0.4.3.2-alpha.
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o Minor bugfixes (client, IPv6):
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- Stop forcing all non-SocksPorts to prefer IPv6 exit connections.
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Instead, prefer IPv6 connections by default, but allow users to
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change their configs using the "NoPreferIPv6" port flag. Fixes bug
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33608; bugfix on 0.4.3.1-alpha.
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- Revert PreferIPv6 set by default on the SocksPort because it broke
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the torsocks use case. Tor doesn't have a way for an application
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to request the hostname to be resolved for a specific IP version,
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but torsocks requires that. Up until now, IPv4 was used by default
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so torsocks is expecting that, and can't handle a possible IPv6
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being returned. Fixes bug 33804; bugfix on 0.4.3.1-alpha.
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o Minor bugfixes (key portability):
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- When reading PEM-encoded key data, tolerate CRLF line-endings even
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if we are not running on Windows. Previously, non-Windows hosts
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would reject these line-endings in certain positions, making
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certain key files hard to move from one host to another. Fixes bug
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33032; bugfix on 0.3.5.1-alpha.
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o Minor bugfixes (logging):
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- Flush stderr, stdout, and file logs during shutdown, if supported
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by the OS. This change helps make sure that any final logs are
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recorded. Fixes bug 33087; bugfix on 0.4.1.6.
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- Stop closing stderr and stdout during shutdown. Closing these file
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descriptors can hide sanitiser logs. Fixes bug 33087; bugfix
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on 0.4.1.6.
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o Minor bugfixes (onion services v3):
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- Relax severity of a log message that can appear naturally when
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decoding onion service descriptors as a relay. Also add some
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diagnostics to debug any future bugs in that area. Fixes bug
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31669; bugfix on 0.3.0.1-alpha.
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- Block a client-side assertion by disallowing the registration of
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an x25519 client auth key that's all zeroes. Fixes bug 33545;
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bugfix on 0.4.3.1-alpha. Based on patch from "cypherpunks".
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o Code simplification and refactoring:
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- Disable our coding standards best practices tracker in our git
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hooks. (0.4.3 branches only.) Closes ticket 33678.
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o Testing:
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- Avoid conflicts between the fake sockets in tor's unit tests, and
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real file descriptors. Resolves issues running unit tests with
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GitHub Actions, where the process that embeds or launches the
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tests has already opened a large number of file descriptors. Fixes
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bug 33782; bugfix on 0.2.8.1-alpha. Found and fixed by
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Putta Khunchalee.
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o Testing (CI):
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- In our Appveyor Windows CI, copy required DLLs to test and app
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directories, before running tor's tests. This ensures that tor.exe
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and test*.exe use the correct version of each DLL. This fix is not
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required, but we hope it will avoid DLL search issues in future.
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Fixes bug 33673; bugfix on 0.3.4.2-alpha.
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- On Appveyor, skip the crypto/openssl_version test, which is
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failing because of a mismatched library installation. Fix
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for 33643.
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Changes in version 0.4.3.3-alpha - 2020-03-18
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Tor 0.4.3.3-alpha fixes several bugs in previous releases, including
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TROVE-2020-002, a major denial-of-service vulnerability that affected
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