Exploitation Summary
EIP tracks 1 public exploit for CVE-2011-4029.
AI-analyzed exploit summary This PoC exploits a race condition in Xorg (CVE-2011-4029) to change file permissions on arbitrary files (default: /etc/shadow) by manipulating symlinks and process signals. It uses inotify to detect file creation and SIGSTOP/SIGCONT to pause/resume the Xorg process during the vulnerable chmod operation.
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.
Exploits (1)
This PoC exploits a race condition in Xorg (CVE-2011-4029) to change file permissions on arbitrary files (default: /etc/shadow) by manipulating symlinks and process signals. It uses inotify to detect file creation and SIGSTOP/SIGCONT to pause/resume the Xorg process during the vulnerable chmod operation.