Files executed through a mail aliases file must not have extended ACLs.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-226935	GEN004430	SV-226935r603265_rule		Medium

Description
Excessive permissions on files executed through a mail alias file could result in modification by an unauthorized user, execution of malicious code, and/or system compromise.

STIG	Date
Solaris 10 SPARC Security Technical Implementation Guide	2020-12-04

Details

Check Text ( C-29097r485114_chk )
Examine the contents of the /etc/mail/aliases file. For each file referenced, check the permissions of the file. # ls -lL [file referenced from aliases] If the permissions include a "+", the file has an extended ACL and this is a finding.

Fix Text (F-29085r485115_fix)
Remove the extended ACL from the file. # chmod A- [file referenced from aliases]