USN-1585-1: FreeRADIUS vulnerability

Publication date

26 September 2012

Overview

FreeRADIUS could be made to crash or run programs if it received specially crafted network traffic.


Packages

  • freeradius - a high-performance and highly configurable RADIUS server

Details

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.

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.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
12.04 precise freeradius –  2.1.10+dfsg-3ubuntu0.12.04.1
11.10 oneiric freeradius –  2.1.10+dfsg-3ubuntu0.11.10.1
11.04 natty freeradius –  2.1.10+dfsg-2ubuntu2.1

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