[USN-4290-1] libpam-radius-auth vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Mon Feb 24 15:59:21 UTC 2020

Ubuntu Security Notice USN-4290-1
February 24, 2020

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

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


Package Information:

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