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

OL 9 pam_unix.so module must be configured in the password-auth file to use a FIPS 140-3 approved cryptographic hashing algorithm for system authentication.

DISA Rule

SV-271624r1091584_rule

Vulnerability Number

V-271624

Group Title

SRG-OS-000073-GPOS-00041

Rule Version

OL09-00-001060

Severity

CAT II

CCI(s)

• CCI-004062 - For password-based authentication, store passwords using an approved salted key derivation function, preferably using a keyed hash.

Weight

10

Fix Recommendation

Configure OL 9 to use a FIPS 140-3 approved cryptographic hashing algorithm for system authentication.

Edit/modify the following line in the "/etc/pam.d/password-auth" file to include the sha512 option for pam_unix.so:

password sufficient pam_unix.so sha512

Check Contents

Verify that OL 9 pam_unix.so module is configured to use sha512 in /etc/pam.d/password-auth with the following command:

$ grep "^password.*pam_unix.so.*sha512" /etc/pam.d/password-auth
password sufficient pam_unix.so sha512

If "sha512" is missing, or the line is commented out, this is a finding.

Vulnerability Number

V-271624

Documentable

False

Rule Version

OL09-00-001060

Severity Override Guidance

Verify that OL 9 pam_unix.so module is configured to use sha512 in /etc/pam.d/password-auth with the following command:

$ grep "^password.*pam_unix.so.*sha512" /etc/pam.d/password-auth
password sufficient pam_unix.so sha512

If "sha512" is missing, or the line is commented out, this is a finding.

Check Content Reference

M

Target Key

5680