Ubuntu Security Notice USN-2127-1
4th March, 2014
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.
- gnutls26 - GNU TLS library
Nikos Mavrogiannopoulos discovered that GnuTLS incorrectly handled
certificate verification functions. If a remote attacker were able to
perform a man-in-the-middle attack, this flaw could be exploited with
specially crafted certificates to view sensitive information.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 13.10:
- libgnutls26 2.12.23-1ubuntu4.2
- Ubuntu 12.10:
- libgnutls26 2.12.14-5ubuntu4.6
- Ubuntu 12.04 LTS:
- libgnutls26 2.12.14-5ubuntu3.7
- Ubuntu 10.04 LTS:
- libgnutls26 2.8.5-2ubuntu0.5
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.