CVE-2013-6171 Auth bypass in n/a
Local attackers can bypass authentication and access virtual email accounts by exploiting a setuid flaw in Dovecot's checkpassword-reply process.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-6171?
CVE-2013-6171 is a medium-severity authentication bypass vulnerability in Dovecot Dovecot, published on 9 Dec 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
checkpassword-reply in Dovecot before 2.2.7 performs setuid operations to a user who is authenticating, which allows local users to bypass authentication and access virtual email accounts by attaching to the process and using a restricted file descriptor to modify account information in the response to the dovecot-auth server.
Weakness: CWE-287
Which versions are affected by CVE-2013-6171?
It affects 1 product.
Products include Dovecot Dovecot.
How do I fix CVE-2013-6171?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2013-6171 being exploited?
There is no known exploitation of CVE-2013-6171 in the wild and no public exploit code.
Other vulnerabilities in Dovecot Dovecot
Sources
Also known as DEBIAN-CVE-2013-6171, GHSA-f2q7-xh76-m34j.