STIGQter: STIG Summary: Oracle Linux 9 Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

OL 9 must have the Advanced Intrusion Detection Environment (AIDE) package installed.

DISA Rule

SV-271496r1091200_rule

Vulnerability Number

V-271496

Group Title

SRG-OS-000363-GPOS-00150

Rule Version

OL09-00-000300

Severity

CAT II

CCI(s)

• CCI-001744 - Implement organization-defined security responses automatically if baseline configurations are changed in an unauthorized manner.
• CCI-002696 - Verify correct operation of organization-defined security functions.

Weight

10

Fix Recommendation

Install AIDE, initialize it, and perform a manual check.

Install AIDE:

$ sudo dnf install -y aide

Initialize AIDE:

$ sudo /usr/sbin/aide --init

Example output:

Start timestamp: 2023-06-05 10:09:04 -0600 (AIDE 0.16)
AIDE initialized database at /var/lib/aide/aide.db.new.gz

Number of entries: 86833

---------------------------------------------------
The attributes of the (uncompressed) database(s):
---------------------------------------------------

/var/lib/aide/aide.db.new.gz
MD5 : coZUtPHhoFoeD7+k54fUvQ==
SHA1 : DVpOEMWJwo0uPgrKZAygIUgSxeM=
SHA256 : EQiZH0XNEk001tcDmJa+5STFEjDb4MPE
TGdBJ/uvZKc=
SHA512 : 86KUqw++PZhoPK0SZvT3zuFq9yu9nnPP
toei0nENVELJ1LPurjoMlRig6q69VR8l
+44EwO9eYyy9nnbzQsfG1g==

End timestamp: 2023-06-05 10:09:57 -0600 (run time: 0m 53s)

The new database will need to be renamed to be read by AIDE:

$ sudo mv /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz

Perform a manual check:

$ sudo /usr/sbin/aide --check

Example output:

2023-06-05 10:16:08 -0600 (AIDE 0.16)
AIDE found NO differences between database and filesystem. Looks okay!!

Check Contents

Verify that OL 9 has the package installed with the following command:

$ dnf list --installed aide
Installed Packages
aide.x86_64 0.16-100.el9 @ol9_appstream

If AIDE is not installed, ask the system administrator (SA) how file integrity checks are performed on the system.

If there is no application installed to perform integrity checks, this is a finding.

If AIDE is installed, check if it has been initialized with the following command:

$ sudo /usr/sbin/aide --check

If the output is "Couldn't open file /var/lib/aide/aide.db.gz for reading", this is a finding.

Vulnerability Number

V-271496

Documentable

False

Rule Version

OL09-00-000300

Severity Override Guidance

Verify that OL 9 has the package installed with the following command:

$ dnf list --installed aide
Installed Packages
aide.x86_64 0.16-100.el9 @ol9_appstream

If AIDE is not installed, ask the system administrator (SA) how file integrity checks are performed on the system.

If there is no application installed to perform integrity checks, this is a finding.

If AIDE is installed, check if it has been initialized with the following command:

$ sudo /usr/sbin/aide --check

If the output is "Couldn't open file /var/lib/aide/aide.db.gz for reading", this is a finding.

Check Content Reference

M

Target Key

5680