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RHEL 10 must be configured to use a FIPS 140-3-approved cryptographic hashing algorithm for system authentication by ensuring that the pam_unix.so module is configured in the "system-auth" file.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-281219RHEL-10-600710SV-281219r1166609_ruleCCI-004062medium
Description
Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied on to provide confidentiality or integrity, and DOD data may be compromised. RHEL 10 systems using encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules. FIPS 140-3 is the current standard for validating that mechanisms used to access cryptographic modules use authentication that meets DOD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system. Satisfies: SRG-OS-000073-GPOS-00041, SRG-OS-000120-GPOS-00061
STIGDate
Red Hat Enterprise Linux 10 Security Technical Implementation Guide2026-03-11

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-10Authenticator Management
0.50
IAC-10.1Password-Based Authentication
0.50
IAC-10.4Automated Support For Password Strength
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (58) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-3(4)Discretionary Access Control
1.00

+48 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.5.10
1.00
3.5.7
1.00
3.5.8
1.00
3.5.9
1.00
CCI1 mapping
CCI-004062
1.00

Details

Check Text (C-281219r1166609_chk)

Verify RHEL 10 is configured to use a FIPS 140-3-approved cryptographic hashing algorithm in "/etc/pam.d/system-auth" via the pam_unix.so module with the following command: $ sudo grep "^password.*pam_unix.so.*sha512" /etc/pam.d/system-auth password sufficient pam_unix.so sha512 If "sha512" is missing, or the line is commented out, this is a finding.

Fix Text (F-85685r1166608_fix)

Configure RHEL 10 to use a FIPS 140-3-approved cryptographic hashing algorithm for system authentication in "/etc/pam.d/system-auth" via the "pam_unix.so" module. Edit/modify the following line in the "/etc/pam.d/system-auth" file to include the sha512 option for pam_unix.so: password sufficient pam_unix.so sha512