Remote code execution in iControl REST API in multiple F5 BIG-IP products

1) OS Command Injection

EUVDB-ID: #VU51391

Risk: High

CVSSv4.0: 9.3 [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:A/U:Amber]

CVE-ID: CVE-2021-22986

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

Exploit availability: Yes

Description

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

The vulnerability exists due to improper input validation within the iControl REST API. A remote unauthenticated attacker can send a specially crafted HTTP request to the affected API endpoint and execute arbitrary OS commands 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: 12.1.0 HF1 - 16.0.1

BIG-IP LTM: 12.1.0 HF1 - 16.0.1

BIG-IP AAM: 12.1.0 HF1 - 16.0.1

BIG-IP Advanced WAF: 12.1.0 - 16.0.1

BIG-IP AFM: 12.1.0 HF1 - 16.0.1

BIG-IP Analytics: 12.1.0 - 16.0.1

BIG-IP APM: 12.1.0 HF1 - 16.0.1

BIG-IP ASM: 12.1.0 HF1 - 16.0.1

BIG-IP DDHD: 12.1.0 - 16.0.1

BIG-IP DNS: 12.1.0 - 16.0.1

BIG-IP FPS: 12.1.0 - 16.0.1

BIG-IP GTM: 12.1.0 - 16.0.1

BIG-IP Link Controller: 12.1.0 HF1 - 16.0.1

BIG-IP PEM: 12.1.0 HF1 - 16.0.1

BIG-IP SSLO: 12.1.0 - 16.0.1

BIG-IQ Centralized Management: 6.0.0 - 7.1.0

CPE2.3

• cpe:2.3:h:f5_networks:big-ip:12.1.5.2:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:13.1.3.5:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:14.1.3.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.2:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:16.0.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_ltm:12.1.0 HF1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_ltm:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_ltm:12.1.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_aam:12.1.0:HF1:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_aam:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5_networks:big-ip_advanced_waf:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_afm:12.1.0:HF1:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_analytics:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_apm:12.1.0:HF1:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_asm:12.1.0 HF1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_ddhd:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_dns:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_fps:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_gtm:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_link_controller:12.1.0 HF1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_pem:12.1.0 HF1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_sslo:12.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5_networks:big-iq:6.0.0:*:*:*:*:*:*:*

External links

https://support.f5.com/csp/article/K03009991

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?

Yes. This vulnerability is being exploited in the wild.