Vulnerability CVE-2011-3349
Published: 2019-11-19   Modified: 2019-11-24

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.

Type:

CWE-269

 (Improper Privilege Management)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Lightdm project -> Lightdm 

 References:
https://access.redhat.com/security/cve/cve-2011-3349
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
https://security-tracker.debian.org/tracker/CVE-2011-3349
https://www.securityfocus.com/bid/50506
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