copy changelog to releasenotes
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Nick Mathewson
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ReleaseNotes
97
ReleaseNotes
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@ -2,6 +2,103 @@ This document summarizes new features and bugfixes in each stable release
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of Tor. If you want to see more detailed descriptions of the changes in
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each development snapshot, see the ChangeLog file.
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Changes in version 0.2.9.14 - 2017-12-01
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Tor 0.3.0.13 backports important security and stability bugfixes from
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later Tor releases. All Tor users should upgrade to this release, or
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to another of the releases coming out today.
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o Major bugfixes (exit relays, DNS, backport from 0.3.2.4-alpha):
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- Fix an issue causing DNS to fail on high-bandwidth exit nodes,
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making them nearly unusable. Fixes bugs 21394 and 18580; bugfix on
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0.1.2.2-alpha, which introduced eventdns. Thanks to Dhalgren for
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identifying and finding a workaround to this bug and to Moritz,
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Arthur Edelstein, and Roger for helping to track it down and
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analyze it.
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o Major bugfixes (security, backport from 0.3.2.6-alpha):
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- Fix a denial of service bug where an attacker could use a
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malformed directory object to cause a Tor instance to pause while
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OpenSSL would try to read a passphrase from the terminal. (Tor
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instances run without a terminal, which is the case for most Tor
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packages, are not impacted.) Fixes bug 24246; bugfix on every
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version of Tor. Also tracked as TROVE-2017-011 and CVE-2017-8821.
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Found by OSS-Fuzz as testcase 6360145429790720.
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- Fix a denial of service issue where an attacker could crash a
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directory authority using a malformed router descriptor. Fixes bug
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24245; bugfix on 0.2.9.4-alpha. Also tracked as TROVE-2017-010
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and CVE-2017-8820.
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- When checking for replays in the INTRODUCE1 cell data for a
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(legacy) onion service, correctly detect replays in the RSA-
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encrypted part of the cell. We were previously checking for
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replays on the entire cell, but those can be circumvented due to
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the malleability of Tor's legacy hybrid encryption. This fix helps
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prevent a traffic confirmation attack. Fixes bug 24244; bugfix on
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0.2.4.1-alpha. This issue is also tracked as TROVE-2017-009
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and CVE-2017-8819.
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o Major bugfixes (security, onion service v2, backport from 0.3.2.6-alpha):
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- Fix a use-after-free error that could crash v2 Tor onion services
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when they failed to open circuits while expiring introduction
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points. Fixes bug 24313; bugfix on 0.2.7.2-alpha. This issue is
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also tracked as TROVE-2017-013 and CVE-2017-8823.
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o Major bugfixes (security, relay, backport from 0.3.2.6-alpha):
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- When running as a relay, make sure that we never build a path
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through ourselves, even in the case where we have somehow lost the
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version of our descriptor appearing in the consensus. Fixes part
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of bug 21534; bugfix on 0.2.0.1-alpha. This issue is also tracked
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as TROVE-2017-012 and CVE-2017-8822.
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o Minor features (bridge, backport from 0.3.1.9):
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- Bridges now include notice in their descriptors that they are
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bridges, and notice of their distribution status, based on their
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publication settings. Implements ticket 18329. For more fine-
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grained control of how a bridge is distributed, upgrade to 0.3.2.x
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or later.
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o Minor features (directory authority, backport from 0.3.2.6-alpha):
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- Add an IPv6 address for the "bastet" directory authority. Closes
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ticket 24394.
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o Minor features (geoip):
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- Update geoip and geoip6 to the November 6 2017 Maxmind GeoLite2
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Country database.
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o Minor features (security, windows, backport from 0.3.1.1-alpha):
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- Enable a couple of pieces of Windows hardening: one
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(HeapEnableTerminationOnCorruption) that has been on-by-default
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since Windows 8, and unavailable before Windows 7; and one
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(PROCESS_DEP_DISABLE_ATL_THUNK_EMULATION) which we believe doesn't
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affect us, but shouldn't do any harm. Closes ticket 21953.
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o Minor bugfix (relay address resolution, backport from 0.3.2.1-alpha):
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- Avoid unnecessary calls to directory_fetches_from_authorities() on
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relays, to prevent spurious address resolutions and descriptor
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rebuilds. This is a mitigation for bug 21789. Fixes bug 23470;
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bugfix on in 0.2.8.1-alpha.
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o Minor bugfixes (compilation, backport from 0.3.2.1-alpha):
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- Fix unused variable warnings in donna's Curve25519 SSE2 code.
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Fixes bug 22895; bugfix on 0.2.7.2-alpha.
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o Minor bugfixes (logging, relay shutdown, annoyance, backport from 0.3.2.2-alpha):
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- When a circuit is marked for close, do not attempt to package any
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cells for channels on that circuit. Previously, we would detect
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this condition lower in the call stack, when we noticed that the
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circuit had no attached channel, and log an annoying message.
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Fixes bug 8185; bugfix on 0.2.5.4-alpha.
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o Minor bugfixes (relay, crash, backport from 0.3.2.4-alpha):
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- Avoid a crash when transitioning from client mode to bridge mode.
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Previously, we would launch the worker threads whenever our
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"public server" mode changed, but not when our "server" mode
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changed. Fixes bug 23693; bugfix on 0.2.6.3-alpha.
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o Minor bugfixes (testing, backport from 0.3.1.6-rc):
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- Fix an undersized buffer in test-memwipe.c. Fixes bug 23291;
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bugfix on 0.2.7.2-alpha. Found and patched by Ties Stuij.
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Changes in version 0.2.9.13 - 2017-10-25
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Tor 0.2.9.13 backports a collection of bugfixes from later Tor release
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series, including a bugfix for a crash issue that had affected relays
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