DescriptionThe TLS implementation in GnuTLS before 2.12.23, 3.0.x before 3.0.28, and 3.1.x before 3.1.7 does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.
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)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
gnutls26 (PTS)wheezy, wheezy (security)2.12.20-8+deb7u5fixed
gnutls28 (PTS)jessie3.3.8-6+deb8u7fixed
jessie (security)3.3.8-6+deb8u6fixed
stretch (security)3.5.8-5+deb9u1fixed
buster, sid3.5.18-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[squeeze] - gnutls26 <no-dsa> (Too intrusive to backport)

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