Command Injection in F5 Networks products - CVE-2020-5858

Vulnerability identifier: #VU26463

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-5858

CWE-ID: CWE-77

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to execute arbitrary commands on the system.

The vulnerability exists due to the improper input validation. A local user with TMOS Shell (tmsh) access can use a specially crafted "tmsh" command and execute arbitrary commands with elevated privileges.

BIG-IQ Centralized Management
BIG-IP
BIG-IP DNS
BIG-IP AAM
BIG-IP Edge Gateway
BIG-IP Link Controller
BIG-IP WebAccelerator
BIG-IP LTM
BIG-IP AFM
BIG-IP Analytics
BIG-IP APM
BIG-IP ASM
BIG-IP FPS
BIG-IP GTM
BIG-IP PEM

Install updates from vendor's website.

BIG-IP - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP DNS - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP LTM - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP AAM - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP AFM - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP Analytics - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP APM - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP ASM - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP Edge Gateway - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP FPS - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP GTM - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP Link Controller - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP PEM - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0
BIG-IP WebAccelerator - addressed in versions 12.1.5.1, 14.1.2.3, 15.1.0

• https://support.f5.com/csp/article/K36814487

• Multiple vulnerabilities in F5 BIG-IP products and BIG-IQ Centralized Management