CVE-2011-4029
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…
Does this matter?
A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is low and EPSS is 0.6%. Treat it as high on anything reachable from the internet.
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.
- CVSS 2.0
- 1.9 LOWAV:L/AC:M/Au:N/C:P/I:N/A:N
- EPSS
- 0.60% probability · 49th percentile
- Public exploits
- 1 in Exploit-DB · first 28 October 2011
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- x.org/x server
- Source
- cve@mitre.org
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://cgit.freedesktop.org/xorg/xserver/commit/?id=b67581cf825940fdf52bf2e0af4330e695d724a4Patch
- http://lists.freedesktop.org/archives/xorg/2011-October/053680.html
- http://rhn.redhat.com/errata/RHSA-2012-0939.html
- http://secunia.com/advisories/46460Vendor Advisory
- http://secunia.com/advisories/49579Vendor Advisory
- http://cgit.freedesktop.org/xorg/xserver/commit/?id=b67581cf825940fdf52bf2e0af4330e695d724a4Patch
- http://lists.freedesktop.org/archives/xorg/2011-October/053680.html
- http://rhn.redhat.com/errata/RHSA-2012-0939.html
- http://secunia.com/advisories/46460Vendor Advisory
- http://secunia.com/advisories/49579Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.