FILE-6344 - Restricting process details to users

(File Systems)

This information is provided as part of the Lynis community project. It is related to Lynis control FILE-6344 and should be considered as-is and without guarantees. Any advice and commands should be tested before implementing them in production environments.

Description

The pseudo file system /proc reveals a process data for all users. Especially in shared environments, or where multiple users have access, this is a security risk. Even for a basic web server it may help restricting who can see process data in /proc, to prevent possible information leakage.

How to solve

Change the hidepid mount option on /proc.

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Lynis is a technical security auditing tool for Unix flavors like Linux, macOS, AIX, Solaris, and *BSD. It is open source software and free to use. Typical usage include system hardening, compliance testing, and vulnerability scanning. The project has an active community, including development via GitHub.

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