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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
lightdm lightdm
before 0.9.6affected
References
- https://security-tracker.debian.org/tracker/CVE-2011-3349 ↗
- https://access.redhat.com/security/cve/cve-2011-3349 ↗
- https://www.securityfocus.com/bid/50506 ↗
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=639151 ↗
- https://bugs.launchpad.net/debian/+source/lightdm/+bug/834079 ↗
- https://seclists.org/oss-sec/2011/q3/393 ↗