USN-6453-2: X.Org X Server vulnerabilities
31 October 2023
Several security issues were fixed in X.Org X Server, xwayland.
- xorg-server - X.Org X11 server
USN-6453-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and
Ubuntu 18.04 LTS.
Original advisory 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)
The problem can be corrected by updating your system to the following package versions:
- xserver-xorg-core - 2:1.15.1-0ubuntu2.11+esm8
After a standard system update you need to reboot your computer to make
all the necessary changes.
- USN-6453-1: xnest, xdmx-tools, xserver-xorg-dev, xserver-common, xorg-server-source, xserver-xorg-legacy, xwayland, xserver-xephyr, xdmx, xserver-xorg-core, xorg-server, xvfb