FreeRADIUS could be made to crash or run programs if it received specially crafted network traffic.
Timo Warns discovered that FreeRADIUS incorrectly handled certain long timestamps in client certificates. A remote attacker could exploit this flaw and cause the FreeRADIUS server to crash, resulting in a denial of service, or possibly execute arbitrary code.
26 September 2012
A security issue affects these releases of Ubuntu and its derivatives:
FreeRADIUS could be made to crash or run programs if it received specially crafted network traffic.
Timo Warns discovered that FreeRADIUS incorrectly handled certain long timestamps in client certificates. A remote attacker could exploit this flaw and cause the FreeRADIUS server to crash, resulting in a denial of service, or possibly execute arbitrary code.
The default compiler options for affected releases should reduce the vulnerability to a denial of service.
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