Privilege escalation in F5 BIG-IP Advanced WAF and BIG-IP ASM



Published: 2021-08-26
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-23031
CWE-ID CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
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BIG-IP Advanced WAF
Client/Desktop applications / Antivirus software/Personal firewalls

BIG-IP ASM
Hardware solutions / Security hardware applicances

Vendor F5 Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU56113

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23031

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the TMUI/Configuration utility, which leads to security restrictions bypass and privilege escalation.

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 - 16.0.1


CPE2.3 External links

http://support.f5.com/csp/article/K41351250

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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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