CVE-2006-6939 Path traversal in n/a

Medium 4.6 Published 17 Jan 2007 Updated 7 Aug 2024

Local attackers can overwrite arbitrary files via symlink attacks on temporary files in GNU ed, requiring local access.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2006-6939?

CVE-2006-6939 is a medium-severity path traversal vulnerability in n/a, published on 17 Jan 2007. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

GNU ed before 0.3 allows local users to overwrite arbitrary files via a symlink attack on temporary files, possibly in the open_sbuf function.

Which versions are affected by CVE-2006-6939?

It affects 1 product.

Products include Gnu Ed.

How do I fix CVE-2006-6939?

Upgrade to a fixed version.

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

Is CVE-2006-6939 being exploited?

There is no known exploitation of CVE-2006-6939 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2006-6939, GHSA-q7jc-952h-fjg4.