Vulnerability CVE-2011-4029
Published: 2012-07-03

Description:
The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to change the permissions of arbitrary files to 444, read those files, and possibly cause a denial of service (removed execution permission) via a symlink attack on a temporary lock file.

Type:

CWE-362

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
1.9/10
2.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
X -> X server 

 References:
http://cgit.freedesktop.org/xorg/xserver/commit/?id=b67581cf825940fdf52bf2e0af4330e695d724a4
http://secunia.com/advisories/49579
http://secunia.com/advisories/46460
http://rhn.redhat.com/errata/RHSA-2012-0939.html
http://lists.freedesktop.org/archives/xorg/2011-October/053680.html
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