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

OL 9 shadow password suite must be configured to use a sufficient number of hashing rounds.

DISA Rule

SV-271627r1091593_rule

Vulnerability Number

V-271627

Group Title

SRG-OS-000073-GPOS-00041

Rule Version

OL09-00-001075

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 OL 9 to encrypt all stored passwords with a strong cryptographic hash.

Edit/modify the following line in the "/etc/login.defs" file and set "SHA_CRYPT_MIN_ROUNDS" to a value no lower than "100000":

SHA_CRYPT_MIN_ROUNDS 100000
SHA_CRYPT_MAX_ROUNDS 100000

Check Contents

Verify that OL 9 has a minimum number of hash rounds configured with the following command:

$ grep -i sha_crypt /etc/login.defs

If "SHA_CRYPT_MIN_ROUNDS" or "SHA_CRYPT_MAX_ROUNDS" is less than "100000", this is a finding.

Vulnerability Number

V-271627

Documentable

False

Rule Version

OL09-00-001075

Severity Override Guidance

Verify that OL 9 has a minimum number of hash rounds configured with the following command:

$ grep -i sha_crypt /etc/login.defs

If "SHA_CRYPT_MIN_ROUNDS" or "SHA_CRYPT_MAX_ROUNDS" is less than "100000", this is a finding.

Check Content Reference

M

Target Key

5680