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Ubuntu: Security update for GnuPG

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.

Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1682-1
January 09, 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 versions:

Ubuntu 12.10:
 gnupg                           1.4.11-3ubuntu4.1
 gnupg2                          2.0.17-2ubuntu3.1

Ubuntu 12.04 LTS:
 gnupg                           1.4.11-3ubuntu2.2
 gnupg2                          2.0.17-2ubuntu2.12.04.2

Ubuntu 11.10:
 gnupg                           1.4.11-3ubuntu1.11.10.2
 gnupg2                          2.0.17-2ubuntu2.11.10.2

Ubuntu 10.04 LTS:
 gnupg                           1.4.10-2ubuntu1.2
 gnupg2                          2.0.14-1ubuntu1.5

Ubuntu 8.04 LTS:
 gnupg                           1.4.6-2ubuntu5.2

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

References:
 http://www.ubuntu.com/usn/usn-1682-1
 CVE-2012-6085

Package Information:
 https://launchpad.net/ubuntu/+source/gnupg/1.4.11-3ubuntu4.1
 https://launchpad.net/ubuntu/+source/gnupg2/2.0.17-2ubuntu3.1
 https://launchpad.net/ubuntu/+source/gnupg/1.4.11-3ubuntu2.2
 https://launchpad.net/ubuntu/+source/gnupg2/2.0.17-2ubuntu2.12.04.2
 https://launchpad.net/ubuntu/+source/gnupg/1.4.11-3ubuntu1.11.10.2
 https://launchpad.net/ubuntu/+source/gnupg2/2.0.17-2ubuntu2.11.10.2
 https://launchpad.net/ubuntu/+source/gnupg/1.4.10-2ubuntu1.2
 https://launchpad.net/ubuntu/+source/gnupg2/2.0.14-1ubuntu1.5
 https://launchpad.net/ubuntu/+source/gnupg/1.4.6-2ubuntu5.2
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