Remote code execution in BIG-IP Advanced WAF/ASM



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-22992
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 BIG-IP Advanced WAF
Client/Desktop applications / Antivirus software/Personal firewalls

BIG-IP ASM
Hardware solutions / Security hardware applicances

Vendor F5 Networks

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU51492

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-22992

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 responses. A remote attacker can create a specially crafted HTTP response to an Advanced WAF/ASM virtual server with Login Page configured in its policy, trigger memory corruption and 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 Advanced WAF: 11.6.1 - 16.0.1

BIG-IP ASM: 11.6.1 HF1 - 16.0.1

CPE2.3 External links

https://support.f5.com/csp/article/K52510511


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?

No. We are not aware of malware exploiting this vulnerability.



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