USN-1987-1: GnuPG vulnerabilities
Ubuntu Security Notice USN-1987-1
9th October, 2013
gnupg, gnupg2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
Several security issues were fixed in GnuPG.
Software description
- 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)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 13.04:
- gnupg2 2.0.19-2ubuntu1.1
- gnupg 1.4.12-7ubuntu1.2
- Ubuntu 12.10:
- gnupg2 2.0.17-2ubuntu3.2
- gnupg 1.4.11-3ubuntu4.3
- Ubuntu 12.04 LTS:
- gnupg2 2.0.17-2ubuntu2.12.04.3
- gnupg 1.4.11-3ubuntu2.4
- Ubuntu 10.04 LTS:
- gnupg2 2.0.14-1ubuntu1.6
- gnupg 1.4.10-2ubuntu1.4
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
via Ubuntu Security Notices http://www.ubuntu.com/usn/usn-1987-1/