The password hashes stored on the system must have been generated using a FIPS 140-2 approved cryptographic hashing algorithm.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000196

SV-63949r1_rule The password hashes stored on the system must have been generated using a FIPS 140-2 approved cryptographic hashing algorithm.

Vulnerability discussion

Systems must employ cryptographic hashes for passwords using the SHA-2 family of algorithms or FIPS 140-2 approved successors. The use of unapproved algorithms may result in weak password hashes more vulnerable to compromise.

Check content

Check all password hashes in /etc/passwd or /etc/shadow begin with '$5$' or '$6$'. Procedure: # cut -d ':' -f2 /etc/passwd # cut -d ':' -f2 /etc/shadow Any password hashes present not beginning with '$5$' or, '$6$' is a finding. Any entries showing only NP, LK, or x are not findings.

Fix text

Change the passwords for all accounts using non-compliant password hashes. (This requires GEN000590 is already met.)

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