=========================================================================Ubuntu Security Notice USN-2229-1
June 02, 2014

gnutls26 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:

GnuTLS could be made to crash or run programs if it connected to a
malicious server.

Software Description:
- gnutls26: GNU TLS library

Details:

Joonas Kuorilehto discovered that GnuTLS incorrectly handled Server Hello
messages. A malicious remote server or a man in the middle could use this
issue to cause GnuTLS to crash, resulting in a denial of service, or
possibly execute arbitrary code.

Update instructions:

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

Ubuntu 14.04 LTS:
  libgnutls26                     2.12.23-12ubuntu2.1

Ubuntu 13.10:
  libgnutls26                     2.12.23-1ubuntu4.3

Ubuntu 12.04 LTS:
  libgnutls26                     2.12.14-5ubuntu3.8

Ubuntu 10.04 LTS:
  libgnutls26                     2.8.5-2ubuntu0.6

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

References:
  https://ubuntu.com/security/notices/USN-2229-1
  CVE-2014-3466

Package Information:
  https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12ubuntu2.1
  https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-1ubuntu4.3
  https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ubuntu3.8
  https://launchpad.net/ubuntu/+source/gnutls26/2.8.5-2ubuntu0.6