CVE-2015-2689

NameCVE-2015-2689
DescriptionTor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle pending-connection resolve states during periods of high DNS load, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via crafted packets.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-178-1, DSA-3203-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tor (PTS)stretch0.2.9.16-1fixed
stretch (security)0.2.9.15-1fixed
buster, buster (security)0.3.5.14-1fixed
bullseye, sid0.4.5.7-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
torsourcesqueeze0.2.4.26-1~deb6u1DLA-178-1
torsourcewheezy0.2.4.26-1DSA-3203-1
torsource(unstable)0.2.5.11-1

Notes

https://bugs.torproject.org/14129

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