CVE-2013-4351

NameCVE-2013-4351
DescriptionGnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as if it has all bits set (all usage permitted), which might allow remote attackers to bypass intended cryptographic protection mechanisms by leveraging the subkey.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-2773-1, DSA-2774-1
NVD severitymedium (attack range: remote)
Debian Bugs722722, 722724

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
gnupg (PTS)wheezy (security), wheezy1.4.12-7+deb7u7fixed
jessie1.4.18-7+deb8u1fixed
stretch, sid1.4.20-6fixed
gnupg2 (PTS)wheezy (security), wheezy2.0.19-2+deb7u2fixed
jessie2.0.26-6fixed
stretch, sid2.1.11-7fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
gnupgsource(unstable)1.4.15-1low722722
gnupgsourcesqueeze1.4.10-4+squeeze3mediumDSA-2773-1
gnupgsourcewheezy1.4.12-7+deb7u2mediumDSA-2773-1
gnupg2source(unstable)2.0.22-1low722724
gnupg2sourcesqueeze2.0.14-2+squeeze2mediumDSA-2774-1
gnupg2sourcewheezy2.0.19-2+deb7u1mediumDSA-2774-1

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