Remote authenticated command execution in BIg-IP Appliance mode Advanced WAF/ASM TMUI



Published: 2021-03-16
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-22989
CWE-ID CWE-78
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) OS Command Injection

EUVDB-ID: #VU51495

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22989

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation within the Traffic Management User Interface (TMUI), when running in Appliance mode with Advanced WAF or ASM provisioned. A remote privileged user with the roles Administrator, Resource Administrator, or Application Security Administrator with network access to the Configuration utility, through the BIG-IP management port or self IP addresses can send specially crafted request to the system and execute arbitrary OS commands.

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/K56142644

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.



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