USN-3316-1: FreeRADIUS vulnerability

7 June 2017

freeradius vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.04


FreeRADIUS would allow unintended access over the network.

Software Description

  • freeradius - high-performance and highly configurable RADIUS server


Stefan Winter and Luboš Pavlíček discovered that FreeRADIUS incorrectly handled the TLS session cache. A remote attacker could possibly use this issue to bypass authentication by resuming an unauthenticated session.

Update instructions

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

Ubuntu 17.04
freeradius - 3.0.12+dfsg-4ubuntu1.1

To update your system, please follow these instructions:

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