vulnerability

Arch Linux: Privilege escalation (CVE-2018-14665)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Oct 25, 2018
Added
Jul 11, 2025
Modified
Nov 27, 2025

Description

Incorrect command-line parameter validation in the Xorg X server can lead to privilege elevation and/or arbitrary files overwrite, when the X server is installed with the setuid bit set and unprivileged users have the ability to log in to the system via physical console.

The -modulepath argument can be used to specify an insecure path to modules that are going to be loaded in the X server, allowing to execute unprivileged code in the privileged process.

The -logfile argument can be used to overwrite arbitrary files in the file system, due to incorrect checks in the parsing of the option.

Solution

arch-linux-upgrade-latest

References

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