1. Ubuntu Security Notices
  2. USN-4521-1

USN-4521-1: pam_tacplus vulnerability

Publication date

21 September 2020

Overview

pam_tacplus could be made to expose sensitive information.

Releases

Packages

  • libpam-tacplus - PAM module for using TACACS+ as an authentication service

Details

It was discovered that pam_tacplus did not properly manage shared secrets
if DEBUG loglevel and journald are used. A remote attacker could use this
issue to expose sensitive information.

It was discovered that pam_tacplus did not properly manage shared secrets
if DEBUG loglevel and journald are used. A remote attacker could use this
issue to expose sensitive information.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal libpam-tacplus –  1.3.8-2+deb8u1build0.20.04.1
18.04 bionic libpam-tacplus –  1.3.8-2+deb8u1build0.18.04.1
16.04 xenial libpam-tacplus –  1.3.8-2+deb8u1build0.16.04.1

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References

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