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Alerts This Week
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Gentoo: GLSA-202402-13 High: TACACS+ Remote Code Execution

gentoo
Calendar Grey February 18, 2024
Dist Gentoo Esm H88
Explore the critical TACACS+ remote code execution flaw found within Gentoo Linux and the recommended measures to address it.
A vulnerability has been discovered in TACACS+ which could lead to remote code execution.

Summary

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

Topics%20covered

Topics Covered

security advisory Gentoo high severity remote code execution TACACS+

Resolution

Gentoo has discontinued support for TACACS+. We recommend that users unmerge it:
# emerge --ask --depclean "net-nds/tac_plus"

References

[ 1 ] CVE-2023-45239 https://nvd.nist.gov/vuln/detail/CVE-2023-45239

Availability

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

Severity: High
Title: TACACS+: Remote Code Execution
Date: February 18, 2024
Bugs: #918536
ID: 202402-13

Topics%20covered

Topics Covered

security advisory Gentoo high severity remote code execution TACACS+

Synopsis

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

Background

An updated version of Cisco's TACACS+ server.

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Affected Packages

Package Vulnerable Unaffected ---------------- --------------- ------------ net-nds/tac_plus <= 4.0.4.27a-r3 Vulnerable!

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.

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