CVE-2019-6598 Denial of service in BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe); Enterprise Manager

Medium 4.3 Published 13 Mar 2019 Updated 17 Sep 2024

Authenticated users can disrupt TMUI services in F5 BIG-IP and Enterprise Manager by sending malformed requests.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-6598?

CVE-2019-6598 is a medium-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 13 Mar 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.1-11.6.3.2, or 11.5.1-11.5.8 or Enterprise Manager 3.1.1, malformed requests to the Traffic Management User Interface (TMUI), also referred to as the BIG-IP Configuration utility, may lead to disruption of TMUI services. This attack requires an authenticated user with any role (other than the No Access role). The No Access user role cannot login and does not have the access level to perform the attack.

Which versions are affected by CVE-2019-6598?

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 Domain Name System and 8 more.

How do I fix CVE-2019-6598?

No fix has been published for CVE-2019-6598 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-2019-6598 being exploited?

There is no known exploitation of CVE-2019-6598 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-gc8m-99qv-67w4.