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Fold 20384 into changelog

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Nick Mathewson 2016-10-17 14:55:05 -04:00
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30
ChangeLog
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Changes in version 0.2.9.4-alpha - 2016-10-17 Changes in version 0.2.9.4-alpha - 2016-10-17
Tor 0.2.9.4-alpha adds numerous small features and fix-ups to previous Tor 0.2.9.4-alpha fixes a security hole in previous versions of Tor
versions of Tor, including the implementation of a feature to future- that would allow a remote attacker to crash a Tor client, hidden
proof the Tor ecosystem against protocol changes, some bug fixes service, relay, or authority. All Tor users should upgrade to this
necessary for Tor Browser to use unix domain sockets correctly, and version, or to 0.2.8.9. Patches will be released for older versions
several portability improvements. We anticipate that this will be the of Tor.
last alpha in the Tor 0.2.9 series, and that the next release will be
a release candidate. Tor 0.2.9.4-alpha also adds numerous small features and fix-ups to
previous versions of Tor, including the implementation of a feature to
future- proof the Tor ecosystem against protocol changes, some bug
fixes necessary for Tor Browser to use unix domain sockets correctly,
and several portability improvements. We anticipate that this will be
the last alpha in the Tor 0.2.9 series, and that the next release will
be a release candidate.
o Major features (security fixes):
- 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 Major features (subprotocol versions): o Major features (subprotocol versions):
- Tor directory authorities now vote on a set of recommended - Tor directory authorities now vote on a set of recommended

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changes/buf-sentinel
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o Major features (security fixes):
- 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).