USN-4290-1: libpam-radius-auth vulnerability

libpam-radius-auth vulnerability

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

  • Ubuntu 19.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


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


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 19.10
libpam-radius-auth - 1.3.17-0ubuntu5.19.10.1
Ubuntu 18.04 LTS
libpam-radius-auth - 1.3.17-0ubuntu5.18.04.1
Ubuntu 16.04 LTS
libpam-radius-auth - 1.3.17-0ubuntu4.1

To update your system, please follow these instructions:

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