The alias files must be owned by root.

From VMware vRealize Automation 7.x SLES Security Technical Implementation Guide

Associated with: CCI-000382

SV-100293r1_rule The alias files must be owned by root.

Vulnerability discussion

If the alias and aliases.db files are not owned by root, an unauthorized user may modify the file to add aliases to run malicious code or redirect email.

Check content

Check the ownership of the alias file: # ls -lL /etc/aliases # ls -lL /etc/aliases.db If all the files are not owned by "root", this is a finding.

Fix text

Change the owner of the alias files to "root": # chown root /etc/aliases # chown root /etc/aliases.db

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