USN-6453-1: X.Org X Server vulnerabilities
25 October 2023
Several security issues were fixed in X.Org X Server, xwayland.
Releases
Packages
- xorg-server - X.Org X11 server
- xwayland - X server for running X clients under Wayland
Details
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
prepending values to certain properties. An attacker could possibly use
this issue to cause the X Server to crash, execute arbitrary code, or
escalate privileges. (CVE-2023-5367)
Sri discovered that the X.Org X Server incorrectly handled detroying
windows in certain legacy multi-screen setups. An attacker could possibly
use this issue to cause the X Server to crash, execute arbitrary code, or
escalate privileges. (CVE-2023-5380)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 23.10
Ubuntu 23.04
Ubuntu 22.04
Ubuntu 20.04
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
Related notices
- USN-6453-2: xserver-xorg-legacy, xnest, xserver-xorg-dev, xvfb, xorg-server-source, xorg-server, xserver-xorg-core, xserver-common, xmir, xwayland, xdmx, xserver-xorg-xmir, xdmx-tools, xserver-xephyr