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V-269241

CAT II (Medium)

AlmaLinux OS 9 must be configured so that the file integrity tool verifies extended attributes.

Rule ID

SV-269241r1050123_rule

STIG

Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide

Version

V1R6

CCIs

CCI-000366

Discussion

Extended attributes in file systems are used to contain arbitrary data and file metadata with security implications.

Check Content

Verify that AIDE is configured to verify extended attributes with the following command:

$ grep xattrs /etc/aide.conf 

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

If the "xattrs" rule is not being used on all uncommented selection lines in the "/etc/aide.conf" file, or extended attributes are not being checked by another file integrity tool, this is a finding.

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 extended attributes. 

If AIDE is installed, ensure the "xattrs" rule is present on all uncommented file and directory selection lists.