GnuTLS could be made to crash or run programs if it connected to a malicious server.
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.
2 June 2014
A security issue affects these releases of Ubuntu and its derivatives:
GnuTLS could be made to crash or run programs if it connected to a malicious server.
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.
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon