CVE-2021-23029 Server-side request forgery in BIG-IP Advanced WAF and BIG-IP ASM

High 8.8 Published 14 Sep 2021 Updated 3 Aug 2024

Authenticated guest users can perform Server-Side Request Forgery attacks via the BIG-IP ASM Configuration utility, potentially accessing internal resources.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-23029?

CVE-2021-23029 is a high-severity server-side request forgery vulnerability in F5 Big-Ip Advanced Web Application Firewall, published on 14 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

On version 16.0.x before 16.0.1.2, insufficient permission checks may allow authenticated users with guest privileges to perform Server-Side Request Forgery (SSRF) attacks through F5 Advanced Web Application Firewall (WAF) and the BIG-IP ASM Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-918

Which versions are affected by CVE-2021-23029?

It affects 2 products.

Products include F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Application Security Manager.

How do I fix CVE-2021-23029?

No fix has been published for CVE-2021-23029 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2021-23029 being exploited?

There is no known exploitation of CVE-2021-23029 in the wild and no public exploit code.

All F5 Big-Ip Advanced Web Application Firewall vulnerabilities

Sources

Also known as GHSA-xg8c-mw7j-wcv9.