XXE in IG-IP ASM and Advanced WAF TMUI

1) XML External Entity injection

EUVDB-ID: #VU59844

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-23031

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote authenticated high-privilege user can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BIG-IP Advanced WAF: 14.1.0 - 16.1.0

BIG-IP ASM: 14.1.0 - 16.1.0

BIG-IP FPS: 14.1.0 - 16.1.0

CPE2.3

• cpe:2.3:a:f5_networks:big-ip_advanced_waf:14.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5_networks:big-ip_advanced_waf:14.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:f5_networks:big-ip_advanced_waf:14.1.2-0.89.37:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_asm:14.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_asm:14.1.0.3.0.79.6:ENG Hotfix:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_asm:14.1.0.3.0.97.6:ENG Hotfix:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_fps:14.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_fps:14.1.0.3.0.79.6:ENG Hotfix:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_fps:14.1.0.3.0.97.6:ENG Hotfix:*:*:*:*:*:*

External links

https://support.f5.com/csp/article/K61112120

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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