Buffer overflow in F5 BIG-IP TMM

1) Buffer overflow

EUVDB-ID: #VU51422

Risk: High

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-22991

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTTP requests within the Traffic Management Microkernel (TMM) URI normalization feature. A remote attacker can create a specially crafted HTTP request to the virtual server associated with an HTTP profile, trigger memory corruption and crash the service or execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 12.1.0 - 16.0.1

BIG-IP LTM: 12.1.0 - 16.0.1

BIG-IP AAM: 12.1.0 - 16.0.1

BIG-IP Advanced WAF: 12.1.0 - 16.0.1

BIG-IP AFM: 12.1.0 - 16.0.1

BIG-IP Analytics: 12.1.0 - 16.0.1

BIG-IP APM: 12.1.0 - 16.0.1

BIG-IP ASM: 12.1.0 - 16.0.1

BIG-IP DDHD: 12.1.0 - 16.0.1

BIG-IP DNS: 12.1.0 - 16.0.1

BIG-IP FPS: 12.1.0 - 16.0.1

BIG-IP GTM: 12.1.0 - 16.0.1

BIG-IP Link Controller: 12.1.0 - 16.0.1

BIG-IP PEM: 12.1.0 - 16.0.1

BIG-IP SSLO: 12.1.0 - 16.0.1

External links

http://support.f5.com/csp/article/K56715231

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.