Rule ID
SV-239529r662038_rule
Version
V2R2
CCIs
CCI-000382
Excessive permissions on the alias files may permit unauthorized modification. If an alias file is modified by an unauthorized user, they may modify the file to run malicious code or redirect email.
Check the permissions of the alias files: # ls -lL /etc/aliases # ls -lL /etc/aliases.db If the alias files have a mode more permissive than "0644", this is a finding.
Change the mode of the alias files to "0644": # chmod 0644 /etc/aliases /etc/aliases.db