CVE-2019-6679 Path traversal in BIG-IP

Low 3.3 Published 23 Dec 2019 Updated 4 Aug 2024

Authenticated users with SCP access can overwrite restricted configuration files via symlink path traversal on F5 BIG-IP devices.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-6679?

CVE-2019-6679 is a low-severity path traversal vulnerability in F5 Big-Ip Access Policy Manager, published on 23 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

On BIG-IP versions 15.0.0-15.0.1, 14.1.0.2-14.1.2.2, 14.0.0.5-14.0.1, 13.1.1.5-13.1.3.1, 12.1.4.1-12.1.5, 11.6.4-11.6.5, and 11.5.9-11.5.10, the access controls implemented by scp.whitelist and scp.blacklist are not properly enforced for paths that are symlinks. This allows authenticated users with SCP access to overwrite certain configuration files that would otherwise be restricted.

Weakness: CWE-59

Which versions are affected by CVE-2019-6679?

It affects 13 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Domain Name System and 7 more.

How do I fix CVE-2019-6679?

No fix has been published for CVE-2019-6679 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2019-6679 being exploited?

There is no known exploitation of CVE-2019-6679 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-hwm9-m7gj-7jf7.