USN-2258-1: GnuPG vulnerability

Ubuntu Security Notice USN-2258-1

26th June, 2014

gnupg, gnupg2 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS
  • Ubuntu 13.10
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

GnuPG could be made to hang if it processed a specially crafted message.

Software description

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

Details

Jean-René Reinhard, Olivier Levillain and Florian Maury 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.

Update instructions

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

Ubuntu 14.04 LTS:
gnupg2 2.0.22-3ubuntu1.1
gnupg 1.4.16-1ubuntu2.1
Ubuntu 13.10:
gnupg2 2.0.20-1ubuntu3.1
gnupg 1.4.14-1ubuntu2.2
Ubuntu 12.04 LTS:
gnupg2 2.0.17-2ubuntu2.12.04.4
gnupg 1.4.11-3ubuntu2.6
Ubuntu 10.04 LTS:
gnupg2 2.0.14-1ubuntu1.7
gnupg 1.4.10-2ubuntu1.6

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

CVE-2014-4617