STIGQter: STIG Summary: Red Hat Enterprise Linux 10 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

RHEL 10 must be configured to use a sufficient number of hashing rounds for the shadow password suite.

DISA Rule

SV-281218r1166606_rule

Vulnerability Number

V-281218

Group Title

SRG-OS-000073-GPOS-00041

Rule Version

RHEL-10-600700

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.
• CCI-000803 - Implement mechanisms for authentication to a cryptographic module that meet the requirements of applicable laws, Executive Orders, directives, policies, regulations, standards, and guidance for such authentication.

Weight

10

Fix Recommendation

Configure RHEL 10 to use a sufficient number of hashing rounds for shadow password suite.

Add or modify the following line in "/etc/pam.d/system-auth" and set "rounds" to 100000:

password sufficient pam_unix.so sha512 rounds=100000

Check Contents

Verify RHEL 10 uses a sufficient number of rounds for the shadow password suite hashing algorithm with the following command:

$ sudo grep rounds /etc/pam.d/system-auth
password sufficient pam_unix.so sha512 rounds=100000

If the setting is not configured or "rounds" is less than 100000, this a finding.

Vulnerability Number

V-281218

Documentable

False

Rule Version

RHEL-10-600700

Severity Override Guidance

Verify RHEL 10 uses a sufficient number of rounds for the shadow password suite hashing algorithm with the following command:

$ sudo grep rounds /etc/pam.d/system-auth
password sufficient pam_unix.so sha512 rounds=100000

If the setting is not configured or "rounds" is less than 100000, this a finding.

Check Content Reference

M

Target Key

5733