CVE-2024-23979 BIG-IP SSL Client Certificate LDAP and CRLDP Authentication profiles vulnerability

High 7.5 Published 14 Feb 2024 Updated 1 Aug 2024

Attackers can cause high CPU utilization and denial of service on F5 BIG-IP systems when specific SSL authentication profiles 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-2024-23979?

CVE-2024-23979 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, 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 SSL Client Certificate LDAP or Certificate Revocation List Distribution Point (CRLDP) authentication profile is configured on a virtual server, undisclosed requests can cause an increase in CPU resource utilization.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Weakness: CWE-770

Which versions are affected by CVE-2024-23979?

It affects 12 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Domain Name System and 6 more.

How do I fix CVE-2024-23979?

No fix has been published for CVE-2024-23979 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-2024-23979 being exploited?

There is no known exploitation of CVE-2024-23979 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-r527-86h2-vjj6.