Race condition - CVE-2011-4029

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Main Vulnerability Database Vulnerabilities #VU33698

Race condition - CVE-2011-4029

Published: July 3, 2012 / Updated: August 4, 2020


Vulnerability identifier: #VU33698
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-4029
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.

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.


Affected software

Amazon Linux AMI
Gentoo Linux
SUSE Linux
xorg-server (Alpine package)

How to mitigate CVE-2011-4029

Install update from vendor's website.

xorg-server (Alpine package) - update to 1.9.5-r1

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins