CVE-2011-3349

Publication date 19 November 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
lightdm	12.10 quantal	Not affected
	12.04 LTS precise	Not affected
	11.10 oneiric	Fixed 0.9.5-0ubuntu2
	11.04 natty	Ignored end of life
	10.10 maverick	Not in release
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not in release

Notes

tyhicks

The code is quite different, but it looks like the version in natty is affected

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Other references

https://www.cve.org/CVERecord?id=CVE-2011-3349