CVE-2023-27378 BIG-IP TMUI XSS vulnerability

High 7.5 Published 3 May 2023 Updated 29 Jan 2025

Reflected XSS in BIG-IP Configuration utility allows attackers to execute JavaScript in the context of logged-in users.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-27378?

CVE-2023-27378 is a high-severity cross-site scripting vulnerability in F5 Big-Ip Access Policy Manager, published on 3 May 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Multiple reflected cross-site scripting (XSS) vulnerabilities exist in undisclosed pages of the BIG-IP Configuration utility which allow an attacker to run JavaScript in the context of the currently logged-in user. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-79

Which versions are affected by CVE-2023-27378?

It affects 19 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager and 13 more.

How do I fix CVE-2023-27378?

No fix has been published for CVE-2023-27378 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-27378 being exploited?

There is no known exploitation of CVE-2023-27378 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-mr98-3f93-6qw6.