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

OL 9 must be configured to use the shadow file to store only encrypted representations of passwords.

DISA Rule

SV-271623r1091581_rule

Vulnerability Number

V-271623

Group Title

SRG-OS-000073-GPOS-00041

Rule Version

OL09-00-001055

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 store only SHA-512 encrypted representations of passwords.

Add or update the following line in the "/etc/login.defs" file:

ENCRYPT_METHOD SHA512

Check Contents

Verify that OL 9 shadow file is configured to store only encrypted representations of passwords with a hash value of "SHA512" with the following command:

# grep -i encrypt_method /etc/login.defs
ENCRYPT_METHOD SHA512

If "ENCRYPT_METHOD" does not have a value of "SHA512", or the line is commented out, this is a finding.

Vulnerability Number

V-271623

Documentable

False

Rule Version

OL09-00-001055

Severity Override Guidance

Verify that OL 9 shadow file is configured to store only encrypted representations of passwords with a hash value of "SHA512" with the following command:

# grep -i encrypt_method /etc/login.defs
ENCRYPT_METHOD SHA512

If "ENCRYPT_METHOD" does not have a value of "SHA512", or the line is commented out, this is a finding.

Check Content Reference

M

Target Key

5680