CVE-2011-3349 Privilege escalation in lightdm
A local attacker can escalate privileges by exploiting symlink vulnerabilities in LightDM's handling of user-controlled configuration files.
- 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-2011-3349?
CVE-2011-3349 is a high-severity vulnerability in lightdm, published on 19 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
lightdm before 0.9.6 writes in .dmrc and Xauthority files using root permissions while the files are in user controlled folders. A local user can overwrite root-owned files via a symlink, which can allow possible privilege escalation.
Weakness: CWE-269
Which versions are affected by CVE-2011-3349?
It affects 1 product.
Products include Lightdm Project Lightdm.
How do I fix CVE-2011-3349?
Upgrade to a fixed version.
Is CVE-2011-3349 being exploited?
There is no known exploitation of CVE-2011-3349 in the wild and no public exploit code.
Other vulnerabilities in lightdm
Sources
Also known as DEBIAN-CVE-2011-3349, GHSA-m2g2-7fc9-g232.