STIGQter: STIG Summary: Red Hat Enterprise Linux 7 Security Technical Implementation Guide Version: 3 Release: 3 Benchmark Date: 23 Apr 2021:

The Red Hat Enterprise Linux operating system must be configured so that the PAM system service is configured to store only encrypted representations of passwords.

DISA Rule

SV-204415r603261_rule

Vulnerability Number

V-204415

Group Title

SRG-OS-000073-GPOS-00041

Rule Version

RHEL-07-010200

Severity

CAT II

CCI(s)

• CCI-000196 - The information system, for password-based authentication, stores only cryptographically-protected passwords.

Weight

10

Fix Recommendation

Configure the operating system to store only SHA512 encrypted representations of passwords.

Add the following line in "/etc/pam.d/system-auth":
pam_unix.so sha512 shadow try_first_pass use_authtok

Add the following line in "/etc/pam.d/password-auth":
pam_unix.so sha512 shadow try_first_pass use_authtok

Note: Manual changes to the listed files may be overwritten by the "authconfig" program. The "authconfig" program should not be used to update the configurations listed in this requirement.

Check Contents

Verify the PAM system service is configured to store only encrypted representations of passwords. The strength of encryption that must be used to hash passwords for all accounts is SHA512.

Check that the system is configured to create SHA512 hashed passwords with the following command:

# grep password /etc/pam.d/system-auth /etc/pam.d/password-auth

Outcome should look like following:
/etc/pam.d/system-auth-ac:password sufficient pam_unix.so sha512 shadow try_first_pass use_authtok
/etc/pam.d/password-auth:password sufficient pam_unix.so sha512 shadow try_first_pass use_authtok

If the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" configuration files allow for password hashes other than SHA512 to be used, this is a finding.

Vulnerability Number

V-204415

Documentable

False

Rule Version

RHEL-07-010200

Severity Override Guidance

Verify the PAM system service is configured to store only encrypted representations of passwords. The strength of encryption that must be used to hash passwords for all accounts is SHA512.

Check that the system is configured to create SHA512 hashed passwords with the following command:

# grep password /etc/pam.d/system-auth /etc/pam.d/password-auth

Outcome should look like following:
/etc/pam.d/system-auth-ac:password sufficient pam_unix.so sha512 shadow try_first_pass use_authtok
/etc/pam.d/password-auth:password sufficient pam_unix.so sha512 shadow try_first_pass use_authtok

If the "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" configuration files allow for password hashes other than SHA512 to be used, this is a finding.

Check Content Reference

M

Target Key

2899

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