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Ubuntu 20.04: 4521-1 Critical: libpam-tacplus Sensitive Data Leak

ubuntu
Calendar Grey September 21, 2020
Dist Ubuntu Esm H88
The recent Ubuntu Security Advisory USN-4521-1 highlights a vulnerability within libpam-tacplus that could potentially leak confidential data, necessitating prompt remedial action.
pam_tacplus could be made to expose sensitive information.

Summary

pam_tacplus could be made to expose sensitive information.

Software Description:

- 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.

Topics%20covered

Topics Covered

security advisory remote access Ubuntu sensitive information libpam-tacplus

Update Instructions

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

Ubuntu 20.04 LTS:
  libpam-tacplus                  1.3.8-2+deb8u1build0.20.04.1

Ubuntu 18.04 LTS:
  libpam-tacplus                  1.3.8-2+deb8u1build0.18.04.1

Ubuntu 16.04 LTS:
  libpam-tacplus                  1.3.8-2+deb8u1build0.16.04.1

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

References

https://ubuntu.com/security/notices/USN-4521-1

CVE-2020-13881

Severity
critical
Lowest
Low
Medium
High
Critical

September 21, 2020

Topics%20covered

Topics Covered

security advisory remote access Ubuntu sensitive information libpam-tacplus

Package Information

https://launchpad.net/ubuntu/+source/libpam-tacplus/1.3.8-2+deb8u1build0.20.04.1
https://launchpad.net/ubuntu/+source/libpam-tacplus/1.3.8-2+deb8u1build0.18.04.1
https://launchpad.net/ubuntu/+source/libpam-tacplus/1.3.8-2+deb8u1build0.16.04.1

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