USN-1987-1: GnuPG vulnerabilities

Publication date

9 October 2013

Overview

Several security issues were fixed in GnuPG.


Packages

  • gnupg - GNU privacy guard - a free PGP replacement
  • gnupg2 - GNU privacy guard - a free PGP replacement

Details

Daniel Kahn Gillmor discovered that GnuPG treated keys with empty usage
flags as being valid for all usages. (CVE-2013-4351)

Taylor R Campbell discovered that GnuPG incorrectly handled certain OpenPGP
messages. If a user or automated system were tricked into processing a
specially-crafted message, GnuPG could consume resources, resulting in a
denial of service. (CVE-2013-4402)

Daniel Kahn Gillmor discovered that GnuPG treated keys with empty usage
flags as being valid for all usages. (CVE-2013-4351)

Taylor R Campbell discovered that GnuPG incorrectly handled certain OpenPGP
messages. If a user or automated system were tricked into processing a
specially-crafted message, GnuPG could consume resources, resulting in a
denial of service. (CVE-2013-4402)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
13.04 raring gnupg2 –  2.0.19-2ubuntu1.1
gnupg –  1.4.12-7ubuntu1.2
12.10 quantal gnupg2 –  2.0.17-2ubuntu3.2
gnupg –  1.4.11-3ubuntu4.3
12.04 precise gnupg2 –  2.0.17-2ubuntu2.12.04.3
gnupg –  1.4.11-3ubuntu2.4
10.04 lucid gnupg2 –  2.0.14-1ubuntu1.6
gnupg –  1.4.10-2ubuntu1.4

Reduce your security exposure

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