Privilege escalation in Lightdm
CVE-2011-3349
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Lightdm — versions before 0.9.6
- Lightdm Project
Weakness classification (CWE)
References
- security-tracker.debian.org/tracker/CVE-2011-3349 (Third Party Advisory)
- access.redhat.com/security/cve/cve-2011-3349 (Broken Link)
- www.securityfocus.com/bid/50506 (VDB Entry, Third Party Advisory)
- bugs.debian.org/cgi-bin/bugreport.cgi (Mailing List, Third Party Advisory)
- bugs.launchpad.net/debian/+source/lightdm/+bug/834079 (Third Party Advisory)
- seclists.org/oss-sec/2011/q3/393 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2011-3349?
- CVE-2011-3349 is a high-severity vulnerability in Lightdm, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2019-11-19.
- How severe is CVE-2011-3349?
- High severity. CVSS v3 base score is 7.8 out of 10.