CVE-2006-6772 Memory corruption in n/a

Critical 9.3 Published 27 Dec 2006 Updated 7 Aug 2024

Remote attackers can execute arbitrary code via format string specifiers in SSL certificate CN fields when w3m is run in dump or backend mode.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2006-6772?

CVE-2006-6772 is a critical memory corruption vulnerability in n/a, published on 27 Dec 2006. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Format string vulnerability in the inputAnswer function in file.c in w3m before 0.5.2, when run with the dump or backend option, allows remote attackers to execute arbitrary code via format string specifiers in the Common Name (CN) field of an SSL certificate associated with an https URL.

Weakness: CWE-134

Which versions are affected by CVE-2006-6772?

It affects 1 product.

Products include W3m W3m.

How do I fix CVE-2006-6772?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2006-6772 being exploited?

There is no known exploitation of CVE-2006-6772 in the wild and no public exploit code.

Sources

Also known as CVE-2007-3125, DEBIAN-CVE-2006-6772, GHSA-x9rf-x2gc-ppgw.