GEN004410 - Files executed through a mail aliases file must be group-owned by root, bin, sys, or other.

Information

If a file executed through a mail aliases file is not group-owned by root or a system group, it may be subject to unauthorized modification. Unauthorized modification of files executed through aliases may allow unauthorized users to attain root privileges.
NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.

Solution

Change the group ownership of the file referenced from /etc/mail/aliases.
# chgrp root <file referenced from aliases>

See Also

https://iasecontent.disa.mil/stigs/zip/U_AIX_6-1_V1R14_STIG.zip