Finding ID | Version | Rule ID | IA Controls | Severity |
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V-38574 | RHEL-06-000062 | SV-50375r2_rule | Medium |
Description |
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Using a stronger hashing algorithm makes password cracking attacks more difficult. |
STIG | Date |
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Red Hat Enterprise Linux 6 Security Technical Implementation Guide | 2015-12-03 |
Check Text ( C-46132r3_chk ) |
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Inspect the "password" section of "/etc/pam.d/system-auth", "/etc/pam.d/system-auth-ac", and other files in "/etc/pam.d" and ensure that the "pam_unix.so" module includes the argument "sha512". $ grep password /etc/pam.d/* | grep pam_unix.so | grep sha512 If it does not, this is a finding. |
Fix Text (F-43522r2_fix) |
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In "/etc/pam.d/system-auth" and "/etc/pam.d/system-auth-ac", among potentially other files, the "password" section of the files control which PAM modules execute during a password change. Set the "pam_unix.so" module in the "password" section to include the argument "sha512", as shown below: password sufficient pam_unix.so sha512 [other arguments...] This will help ensure when local users change their passwords, hashes for the new passwords will be generated using the SHA-512 algorithm. This is the default. Note that any updates made to "/etc/pam.d/system-auth" will be overwritten by the "authconfig" program. The "authconfig" program should not be used. |