What is the vulnerability ID of this issue?

The vulnerability ID of this issue is CVE-2023-45239.

What is the severity of CVE-2023-45239?

The severity of CVE-2023-45239 is critical with a severity value of 9.8.

What is the affected software of CVE-2023-45239?

The affected software of CVE-2023-45239 includes Facebook Tac Plus versions up to and excluding 2023-10-05 and Fedora versions 39.

How can an attacker exploit CVE-2023-45239?

An attacker who can control the username, rem-addr, or NAC address sent to tac_plus can inject shell commands and gain remote code execution on the tac_plus server.

Are there any references for further information?

Yes, you can find more information on this vulnerability at the following references: [GitHub](https://github.com/facebook/tac_plus/pull/41), [GitHub Security Advisory](https://github.com/facebook/tac_plus/security/advisories/GHSA-p334-5r3g-4vx3), [Fedora Project Mailing List](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X4J7ZYMFZB4G4OU5EDJPQLP6F6RKDGIH/)

Vulnerability/
CVE-2023-45239

critical

9.8

CWE

790 20

6/10/2023

19/9/2024

CVE-2023-45239: Input Validation

First published: Fri Oct 06 2023(Updated: )

A lack of input validation exists in tac_plus prior to commit 4fdf178 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.

Credit: cve-assign@fb.com cve-assign@fb.com

Affected Software	Affected Version	How to fix
Facebook Tac Plus	<2023-10-05
Fedoraproject Fedora	=39

Remedy

https://github.com/facebook/tac_plus/pull/41

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the vulnerability ID of this issue?
The vulnerability ID of this issue is CVE-2023-45239.
What is the severity of CVE-2023-45239?
The severity of CVE-2023-45239 is critical with a severity value of 9.8.
What is the affected software of CVE-2023-45239?
The affected software of CVE-2023-45239 includes Facebook Tac Plus versions up to and excluding 2023-10-05 and Fedora versions 39.
How can an attacker exploit CVE-2023-45239?
An attacker who can control the username, rem-addr, or NAC address sent to tac_plus can inject shell commands and gain remote code execution on the tac_plus server.
Are there any references for further information?
Yes, you can find more information on this vulnerability at the following references: [GitHub](https://github.com/facebook/tac_plus/pull/41), [GitHub Security Advisory](https://github.com/facebook/tac_plus/security/advisories/GHSA-p334-5r3g-4vx3), [Fedora Project Mailing List](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X4J7ZYMFZB4G4OU5EDJPQLP6F6RKDGIH/)

collector/nvd-index
agent/author
agent/type
agent/softwarecombine
agent/references
agent/weakness
agent/remedy
agent/severity
agent/tags
agent/first-publish-date
agent/event
agent/description
collector/mitre-cve
source/MITRE
agent/last-modified-date
collector/nvd-api
source/NVD
agent/software-canonical-lookup
vendor/facebook
canonical/facebook tac plus
vendor/fedoraproject
canonical/fedoraproject fedora
version/fedoraproject fedora/39

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.