Ubuntu Security Notice USN-1682-1
9th January, 2013
gnupg, gnupg2 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary
GnuPG could be made to corrupt the keyring if it imported a specially crafted key.
Software description
- gnupg - GNU privacy guard - a free PGP replacement
- gnupg2 - GNU privacy guard - a free PGP replacement
Details
KB Sriram discovered that GnuPG incorrectly handled certain malformed keys.
If a user or automated system were tricked into importing a malformed key,
the GnuPG keyring could become corrupted.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.10:
- gnupg2 2.0.17-2ubuntu3.1
- gnupg 1.4.11-3ubuntu4.1
- Ubuntu 12.04 LTS:
- gnupg2 2.0.17-2ubuntu2.12.04.2
- gnupg 1.4.11-3ubuntu2.2
- Ubuntu 11.10:
- gnupg2 2.0.17-2ubuntu2.11.10.2
- gnupg 1.4.11-3ubuntu1.11.10.2
- Ubuntu 10.04 LTS:
- gnupg2 2.0.14-1ubuntu1.5
- gnupg 1.4.10-2ubuntu1.2
- Ubuntu 8.04 LTS:
- gnupg 1.4.6-2ubuntu5.2
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.