Title

The file integrity tool must be configured to verify Access Control Lists (ACLs). (Cat III impact)

Discussion

ACLs can provide permissions beyond those permitted through the file mode and must be verified by file integrity tools.

Check Content

Verify the file integrity tool is configured to verify Access Control Lists (ACLs). Use the following command to determine if the file is in a location other than "/etc/aide/aide.conf": # find / -name aide.conf Check the "aide.conf" file to determine if the "acl" rule has been added to the rule list being applied to the files and directories selection lists with the following command: # egrep "[+]?acl" /etc/aide/aide.conf VarFile = OwnerMode+n+l+X+acl If the "acl" rule is not being used on all selection lines in the "/etc/aide.conf" file, is commented out, or ACLs are not being checked by another file integrity tool, this is a finding.

Fix Text

Configure the file integrity tool to check file and directory ACLs. If AIDE is installed, ensure the "acl" rule is present on all file and directory selection lists.

Additional Identifiers

Rule ID: SV-90199r3_rule

Vulnerability ID: V-75519

Group Title:

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.