| Name | CVE-2011-4029 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| xorg-server (PTS) | buster | 2:1.20.4-1+deb10u4 | fixed |
| buster (security) | 2:1.20.4-1+deb10u9 | fixed |
| bullseye (security), bullseye | 2:1.20.11-1+deb11u6 | fixed |
| bookworm | 2:21.1.7-3 | fixed |
| sid, trixie | 2:21.1.8-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| xorg-server | source | squeeze | 2:1.7.7-14 | | | |
| xorg-server | source | (unstable) | 2:1.11.1.901-2 | low | | |
Notes
[lenny] - xorg-server <no-dsa> (Minor issue)
http://cgit.freedesktop.org/xorg/xserver/commit/?id=b67581cf825940fdf52bf2e0af4330e695d724a4
this has a poc now: http://web.archive.org/web/20111204204028/http://vladz.devzero.fr:80/Xorg-CVE-2011-4029.txt