Ubuntu 16.04 LTS / 18.04 LTS / 18.10 : xorg-server, xorg-server-hwe-16.04 vulnerability (USN-3802-1)
High Nessus Plugin ID 118492
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionNarendra Shinde discovered that the X.Org X server incorrectly handled certain command line parameters when running as root with the legacy wrapper. When certain graphics drivers are being used, a local attacker could possibly use this issue to overwrite arbitrary files and escalate privileges.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected xserver-xorg-core and / or xserver-xorg-core-hwe-16.04 packages.