USN-4290-2: libpam-radius-auth vulnerability

3 March 2020

libpam-radius-auth vulnerability

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

  • Ubuntu 14.04 ESM
  • Ubuntu 12.04 ESM


libpam-radius-auth could be made to crash if it received specially crafted network traffic.

Software Description

  • libpam-radius-auth - The PAM RADIUS authentication module


USN-4290-1 fixed a vulnerability in libpam-radius-auth. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that libpam-radius-auth incorrectly handled certain long passwords. A remote attacker could possibly use this issue to cause libpam-radius-auth to crash, resulting in a denial of service.

Update instructions

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

Ubuntu 14.04 ESM
libpam-radius-auth - 1.3.17-0ubuntu4+esm1
Ubuntu 12.04 ESM
libpam-radius-auth - 1.3.17-0ubuntu3.1

To update your system, please follow these instructions:

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