Privilege escalation in F5 BIG-IP

1) Input validation error

EUVDB-ID: #VU52744

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23012

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input for items used in system support functionality. A local privileged user granted either "Resource Administrator" or "Administrator" role can execute arbitrary bash commands on BIG-IP system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 13.1.0 - 16.0.1

External links

http://support.f5.com/csp/article/K04234247

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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