GLSA 202402-13: TACACS+: Remote Code Execution

http://security.gentoo.org/

Severity:	high
Title:	TACACS+: Remote Code Execution
Date:	02/18/2024
Bugs:	#918536
ID:	202402-13

Synopsis

A vulnerability has been discovered in TACACS+ which could lead to remote code execution.

Background

An updated version of Cisco's TACACS+ server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-nds/tac_plus	<= 4.0.4.27a-r3		All supported architectures

Description

A vulnerabilitiy has been discovered in TACACS+. Please review the CVE identifier referenced below for details.

Impact

A lack of input validation exists in tac_plus which, when pre or post auth commands are enabled, allows an attacker who can control the username, rem-addr, or NAC address sent to tac_plus to inject shell commands and gain remote code execution on the tac_plus server.

Workaround

There is no known workaround at this time.

Resolution

Gentoo has discontinued support for TACACS+. We recommend that users unmerge it:

          # emerge --ask --depclean "net-nds/tac_plus"

References

CVE-2023-45239

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202402-13.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.