CVE-2013-4143 Auth bypass in n/a
Attackers can bypass the screen lock in xlockmore by exploiting improper handling of NULL values from crypt functions, allowing unauthorized access to the locked session.
- 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-2013-4143?
CVE-2013-4143 is a low-severity authentication bypass vulnerability in n/a, published on 30 May 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The (1) checkPasswd and (2) checkGroupXlockPasswds functions in xlockmore before 5.43 do not properly handle when a NULL value is returned upon an error by the crypt or dispcrypt function as implemented in glibc 2.17 and later, which allows attackers to bypass the screen lock via vectors related to invalid salts.
Which versions are affected by CVE-2013-4143?
It affects 1 product.
Linux distribution packages (1)
xlockmore openSUSE:Tumbleweed | All versions | 5.45-3.8 |
Products include David Bagley Xlockmore.
How do I fix CVE-2013-4143?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2013-4143 being exploited?
There is no known exploitation of CVE-2013-4143 in the wild and no public exploit code.
Sources
Also known as GHSA-jcgx-qjj8-pgf8, MGASA-2013-0225, openSUSE-SU-2024:10134-1.