CVE-2022-35240 BIG-IP Message Routing MQTT vulnerability CVE-2022-35240

High 7.5 Published 4 Aug 2022 Updated 17 Sep 2024

Attackers can cause memory exhaustion and denial of service on F5 BIG-IP devices if the MQTT profile is enabled on a virtual server.

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-2022-35240?

CVE-2022-35240 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 4 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In BIG-IP Versions 16.1.x before 16.1.2.2, 15.1.x before 15.1.6.1, and 14.1.x before 14.1.5, when the Message Routing (MR) Message Queuing Telemetry Transport (MQTT) profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-404

Which versions are affected by CVE-2022-35240?

It affects 11 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 5 more.

How do I fix CVE-2022-35240?

No fix has been published for CVE-2022-35240 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-2022-35240 being exploited?

There is no known exploitation of CVE-2022-35240 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-8xhv-6746-mcr9.