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V-271500

CAT III (Low)

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

Rule ID

SV-271500r1091212_rule

STIG

Oracle Linux 9 Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-000366

Discussion

OL 9 installation media ships with an optional file integrity tool called Advanced Intrusion Detection Environment (AIDE). AIDE is highly configurable at install time. This requirement assumes the "aide.conf" file is under the "/etc" directory. Extended attributes in file systems are used to contain arbitrary data and file metadata with security implications.

Check Content

Verify that OL 9 is configured so that AIDE is configured to verify extended attributes with the following command:

$ sudo 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.

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.