The alias files must be group-owned by root or a system group.

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

Part of SRG-OS-000096-GPOS-00050

Associated with: CCI-000382

SV-100295r1_rule The alias files must be group-owned by root or a system group.

Vulnerability discussion

If the aliases and aliases.db file are not group owned by root or a system group, an unauthorized user may modify one or both of the files to add aliases to run malicious code or redirect email.

Check content

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

Fix text

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

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