CVE-2018-5522 Denial of service in BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)

Medium 5.9 Published 1 Jun 2018 Updated 17 Sep 2024

Attackers can crash the Traffic Management Microkernel by sending crafted DIAMETER transactions, causing a denial of service on F5 BIG-IP devices.

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-2018-5522?

CVE-2018-5522 is a medium-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 1 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

On F5 BIG-IP 13.0.0, 12.0.0-12.1.2, 11.6.1-11.6.3.1, 11.5.1-11.5.5, or 11.2.1, when processing DIAMETER transactions with carefully crafted attribute-value pairs, TMM may crash.

Weakness: CWE-20

Which versions are affected by CVE-2018-5522?

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-2018-5522?

No fix has been published for CVE-2018-5522 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-2018-5522 being exploited?

There is no known exploitation of CVE-2018-5522 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-8cff-cw5j-6hc5.