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The RHEL 8 system-auth file must be configured to use a sufficient number of hashing rounds.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-244520 | RHEL-08-010131 | SV-244520r743809_rule | Medium |
| Description |
|---|
| The system must use a strong hashing algorithm to store the password. The system must use a sufficient number of hashing rounds to ensure the required level of entropy. Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 8 Security Technical Implementation Guide | 2021-06-14 |
Details
| Check Text ( C-47795r743807_chk ) |
|---|
| Check that a minimum number of hash rounds is configured by running the following command: $ sudo grep rounds /etc/pam.d/system-auth password sufficient pam_unix.so sha512 rounds=5000 If "rounds" has a value below "5000", or is commented out, this is a finding. |
| Fix Text (F-47752r743808_fix) |
|---|
| Configure RHEL 8 to encrypt all stored passwords with a strong cryptographic hash. Edit/modify the following line in the "etc/pam.d/system-auth" file and set "rounds" to a value no lower than "5000": password sufficient pam_unix.so sha512 rounds=5000 |