CVE-2022-26890 Denial of service in BIG-IP Advanced WAF, ASM, and APM

High 7.5 Published 5 May 2022 Updated 16 Sep 2024

Attackers can cause a denial of service by terminating the bd process on F5 BIG-IP devices when specific ASM and APM configurations are enabled.

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-2022-26890?

CVE-2022-26890 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 5 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

On F5 BIG-IP Advanced WAF, ASM, and APM 16.1.x versions prior to 16.1.2.1, 15.1.x versions prior to 15.1.5, 14.1.x versions prior to 14.1.4.6, and 13.1.x versions prior to 13.1.5, when ASM or Advanced WAF, as well as APM, are configured on a virtual server, the ASM policy is configured with Session Awareness, and the "Use APM Username and Session ID" option is enabled, undisclosed requests can cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Weakness: CWE-670

Which versions are affected by CVE-2022-26890?

It affects 3 products.

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

How do I fix CVE-2022-26890?

No fix has been published for CVE-2022-26890 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-2022-26890 being exploited?

There is no known exploitation of CVE-2022-26890 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-f6j9-3mcj-w64v.