CVE-2018-5504 Memory corruption in BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)

High 8.1 Published 22 Mar 2018 Updated 16 Sep 2024

Remote attackers can cause denial of service or execute code on F5 BIG-IP systems by sending malformed Websocket requests.

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-2018-5504?

CVE-2018-5504 is a high-severity memory corruption vulnerability in F5 Big-Ip Access Policy Manager, published on 22 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In some circumstances, the Traffic Management Microkernel (TMM) does not properly handle certain malformed Websockets requests/responses, which allows remote attackers to cause a denial-of-service (DoS) or possible remote code execution on the F5 BIG-IP system running versions 13.0.0 - 13.1.0.3 or 12.1.0 - 12.1.3.1.

Which versions are affected by CVE-2018-5504?

It affects 13 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 7 more.

How do I fix CVE-2018-5504?

No fix has been published for CVE-2018-5504 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-5504 being exploited?

There is no known exploitation of CVE-2018-5504 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-649f-3xhr-r5cg.