Vulnerability identifier: #VU26463

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5858

CWE-ID: CWE-77

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
BIG-IP
Hardware solutions / Firmware
BIG-IP LTM
Hardware solutions / Security hardware applicances
BIG-IP AFM
Hardware solutions / Security hardware applicances
BIG-IP Analytics
Hardware solutions / Security hardware applicances
BIG-IP APM
Hardware solutions / Security hardware applicances
BIG-IP ASM
Hardware solutions / Security hardware applicances
BIG-IP FPS
Hardware solutions / Security hardware applicances
BIG-IP GTM
Hardware solutions / Security hardware applicances
BIG-IP PEM
Hardware solutions / Security hardware applicances
BIG-IP AAM
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP DNS
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP Edge Gateway
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP Link Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP WebAccelerator
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IQ Centralized Management
Server applications / Remote management servers, RDP, SSH

Vendor: F5 Networks

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 14.1.0 - 14.1.2, 14.0.0 - 14.0.1.1, 11.5.2 - 11.5.10, 11.6.0 - 11.6.5, 12.1.0 - 12.1.5, 13.1.0 - 13.1.3, 15.0.0 - 15.0.1

BIG-IP LTM: 11.5.2 - 15.0.1

BIG-IP AAM: 11.5.2 - 15.0.1

BIG-IP AFM: 11.5.2 - 15.0.1

BIG-IP Analytics: 11.5.2 - 15.0.1

BIG-IP APM: 11.5.2 - 15.0.1

BIG-IP DNS: 11.5.2 - 15.0.1

BIG-IP ASM: 11.5.2 - 15.0.1

BIG-IP Edge Gateway: 11.5.2 - 15.0.1

BIG-IP FPS: 11.5.2 - 15.0.1

BIG-IP GTM: 11.5.2 - 15.0.1

BIG-IP Link Controller: 11.5.2 - 15.0.1

BIG-IP PEM: 11.5.2 - 15.0.1

BIG-IP WebAccelerator: 11.5.2 - 15.0.1

BIG-IQ Centralized Management: 5.2.0 - 7.0.0

---

External links
http://support.f5.com/csp/article/K36814487

---

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.