CVE-2020-13881 Information disclosure in n/a

High 7.5 Published 6 Jun 2020 Updated 4 Aug 2024

Attackers with log access can retrieve TACACS+ shared secrets if DEBUG logging is enabled in pam_tacplus.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2020-13881?

CVE-2020-13881 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 6 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In support.c in pam_tacplus 1.3.8 through 1.5.1, the TACACS+ shared secret gets logged via syslog if the DEBUG loglevel and journald are used.

Weakness: CWE-532

Which versions are affected by CVE-2020-13881?

It affects 4 products.

Products include Arista Cloudvision Portal, Canonical Ubuntu Linux, Debian Debian Linux, Pam Tacplus Project Pam Tacplus.

How do I fix CVE-2020-13881?

Apply the vendor's patch.

Is CVE-2020-13881 being exploited?

There is no known exploitation of CVE-2020-13881 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DLA-2239-1, DLA-2730-1, GHSA-gm22-vmf2-hwxg, UBUNTU-CVE-2020-13881, USN-4521-1.