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

From Canonical Ubuntu 16.04 Security Technical Implementation Guide

Associated with: CCI-000366

SV-90199r3_rule The file integrity tool must be configured to verify Access Control Lists (ACLs).

Vulnerability 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.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.