QID 375749

F5 BIG-IP ASM (Application Security Manager) is a flexible web application firewall that secures web applications in traditional, virtual, and private cloud environments.
F5 BIG-IP (LTM) Local Traffic Manager is the most popular module offered on F5 Networks BIG-IP platform. The real power of the LTM is it is a Full Proxy, allowing you to augment client and server side connections. All while making informed load balancing decisions on availability, performance, and persistence.
F5 BIG-IP Access Policy Manager (APM) is a secure, flexible, high-performance solution that provides unified global access to your network, cloud, and applications.

Undisclosed requests to a virtual server may be incorrectly handled by Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it theoretically may allow bypass of URL based access control or remote code execution (RCE). (CVE-2021-22991)

Vulnerable Component: BIG-IP ASM, APM,LTM

Affected Versions:
16.0.0 - 16.0.1.0
15.1.0 - 15.1.2.0
14.1.0 - 14.1.3
13.1.0 - 13.1.3.5
12.1.0 - 12.1.5.2

QID Detection Logic(Authenticated):
This QID checks for the vulnerable versions of F5 BIG-IP devices using the tmsh command.

On successful exploitation of the vulnerability an attacker may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it theoretically may allow bypass of URL based access control or remote code execution (RCE).