CVE-2019-6604 Denial of service in BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator)

Medium 6.8 Published 28 Mar 2019 Updated 4 Aug 2024

Attackers can cause a High-Speed Bridge lockup on F5 BIG-IP devices with specific non-default Layer 2 configurations, leading to denial of service.

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-2019-6604?

CVE-2019-6604 is a medium-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 28 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

On BIG-IP 11.5.1-11.5.8, 11.6.1-11.6.3, 12.1.0-12.1.3.6, 13.0.0-13.1.1.1, and 14.0.0-14.0.0.2, under certain conditions, hardware systems with a High-Speed Bridge and using non-default Layer 2 forwarding configurations may experience a lockup of the High-Speed Bridge.

Which versions are affected by CVE-2019-6604?

It affects 14 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 Edge Gateway and 8 more.

How do I fix CVE-2019-6604?

No fix has been published for CVE-2019-6604 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-2019-6604 being exploited?

There is no known exploitation of CVE-2019-6604 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-rhh9-jxgf-chc8.