USN-1570-1: GnuPG vulnerability

Releases

• Ubuntu 12.04
• Ubuntu 11.10
• Ubuntu 11.04
• Ubuntu 10.04
• Ubuntu 8.04

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.

Update instructions

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

Ubuntu 8.04

• gnupg2 - 2.0.7-1ubuntu0.2
• gnupg - 1.4.6-2ubuntu5.1

Ubuntu 12.04

• gnupg2 - 2.0.17-2ubuntu2.12.04.1
• gnupg - 1.4.11-3ubuntu2.1

Ubuntu 11.10

• gnupg2 - 2.0.17-2ubuntu2.11.10.1
• gnupg - 1.4.11-3ubuntu1.11.10.1

Ubuntu 11.04

• gnupg2 - 2.0.14-2ubuntu1.2
• gnupg - 1.4.11-3ubuntu1.11.04.1

Ubuntu 10.04

• gnupg2 - 2.0.14-1ubuntu1.4
• gnupg - 1.4.10-2ubuntu1.1

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

References

• https://launchpad.net/bugs/1016643