USN-1570-1: GnuPG vulnerability

Publication date

17 September 2012

Overview

GnuPG could be tricked into downloading a different key when downloading from a key server.


Packages

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

Details

It was discovered that GnuPG used a short ID when downloading keys from a
keyserver, even if a long ID was requested. An attacker could possibly use
this to return a different key with a duplicate short key id.

It was discovered that GnuPG used a short ID when downloading keys from a
keyserver, even if a long ID was requested. An attacker could possibly use
this to return a different key with a duplicate short key id.

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
8.04 hardy gnupg2 –  2.0.7-1ubuntu0.2
gnupg –  1.4.6-2ubuntu5.1
12.04 precise gnupg2 –  2.0.17-2ubuntu2.12.04.1
gnupg –  1.4.11-3ubuntu2.1
11.10 oneiric gnupg2 –  2.0.17-2ubuntu2.11.10.1
gnupg –  1.4.11-3ubuntu1.11.10.1
11.04 natty gnupg2 –  2.0.14-2ubuntu1.2
gnupg –  1.4.11-3ubuntu1.11.04.1
10.04 lucid gnupg2 –  2.0.14-1ubuntu1.4
gnupg –  1.4.10-2ubuntu1.1

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›