CVE-2021-23015 Auth bypass in BIG-IP

High 7.2 Published 10 May 2021 Updated 3 Aug 2024

Authenticated administrators can bypass Appliance Mode restrictions via undisclosed iControl REST endpoints in F5 BIG-IP devices.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-23015?

CVE-2021-23015 is a high-severity authentication bypass vulnerability in F5 Big-Ip Access Policy Manager, published on 10 May 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

On BIG-IP 15.1.x before 15.1.3, 14.1.x before 14.1.4.2, 13.1.0.8 through 13.1.3.6, and all versions of 16.0.x, when running in Appliance Mode, an authenticated user assigned the 'Administrator' role may be able to bypass Appliance Mode restrictions utilizing undisclosed iControl REST endpoints. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-863

Which versions are affected by CVE-2021-23015?

It affects 14 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager and 8 more.

How do I fix CVE-2021-23015?

No fix has been published for CVE-2021-23015 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-23015 being exploited?

There is no known exploitation of CVE-2021-23015 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-6x77-892j-xm83.