A libpam-radius-auth security update has been released for Ubuntu Linux 14.04 ESM and 12.04 ESM.

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Ubuntu Security Notice USN-4290-2
March 03, 2020

libpam-radius-auth vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

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

Details:

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

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

References:
  https://usn.ubuntu.com/4290-2
  https://usn.ubuntu.com/4290-1
CVE-2015-9542