Improper certificate revocation in curl implementation within Command Line Interface, EAV Monitors and iRules components in F5 BIG-IP products

Published: 2021-02-19

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Check for Certificate Revocation

EUVDB-ID: #VU48895

Risk: Medium


CVE-ID: CVE-2020-8286


Exploit availability:


The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to incorrectly implemented checks for OCSP stapling. A remote attacker can provide a fraudulent OCSP response that would appear fine, instead of the real one.


Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

BIG-IP DNS: 13.1.0 -

BIG-IP SSLO: 13.1.0 -

BIG-IP PEM: 13.1.0 -

BIG-IP Link Controller: 13.1.0 -

BIG-IP GTM: 13.1.0 -

BIG-IP FPS: 13.1.0 -

BIG-IP DDHD: 13.1.0 -

BIG-IP ASM: 13.1.0 -

BIG-IP Analytics: 13.1.0 -

BIG-IP AFM: 13.1.0 -

BIG-IP Advanced WAF: 13.1.0 -

BIG-IP AAM: 13.1.0 -

BIG-IP LTM: 13.1.0 -

BIG-IP: 13.1.0 -

BIG-IP APM: 13.1.0 -

Fixed software versions

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?