CVE-2024-21789 BIG-IP ASM and Advanced WAF vulnerability
Attackers can cause memory exhaustion and denial of service on F5 BIG-IP ASM/Advanced WAF when specific security policies are configured.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-21789?
CVE-2024-21789 is a high-severity denial of service vulnerability in F5 Big-Ip Advanced Web Application Firewall, published on 14 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
When a BIG-IP ASM/Advanced WAF security policy is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
Weakness: CWE-772
Which versions are affected by CVE-2024-21789?
It affects 2 products.
Products include F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Application Security Manager.
How do I fix CVE-2024-21789?
No fix has been published for CVE-2024-21789 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-21789 being exploited?
There is no known exploitation of CVE-2024-21789 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Advanced Web Application Firewall
- CVE-2021-23031 Privilege escalation in BIG-IP Advanced WAF and BIG-IP ASM
- CVE-2021-23029 Server-side request forgery in BIG-IP Advanced WAF and BIG-IP ASM
- CVE-2021-23014 Missing authorization in BIG-IP ASM/Advanced WAF
- CVE-2021-22993 Cross-site scripting in BIG-IP Advanced WAF and BIG-IP ASM
- CVE-2026-40060 BIG-IP Advanced WAF and ASM vulnerability
All F5 Big-Ip Advanced Web Application Firewall vulnerabilities
Sources
Also known as GHSA-qq56-5xwp-c89r.