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V-269239

CAT II (Medium)

AlmaLinux OS 9 must be configured so that the file integrity tool verifies Access Control Lists (ACLs).

Rule ID

SV-269239r1050121_rule

STIG

Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide

Version

V1R6

CCIs

CCI-000366

Discussion

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

Check Content

Verify that that AIDE is verifying ACLs with the following command:

$ grep acl /etc/aide.conf 

All= p+i+n+u+g+s+m+S+sha512+acl+xattrs+selinux

If the "acl" rule is not being used on all uncommented selection lines in the "/etc/aide.conf" file, 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 uncommented file and directory selection lists.