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The system must use a FIPS 140-2 approved cryptographic hashing algorithm for generating account password hashes.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22303 GEN000590 SV-26313r1_rule DCNR-1 IAIA-1 IAIA-2 Medium
Description
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.
STIG Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide 2014-04-02

Details

Check Text ( C-35959r1_chk )
Verify the algorithm used for password hashing is of the SHA-2 family.
# egrep "password .* pam_unix.so" /etc/pam.d/system-auth-ac
If the line indicates the hash algorithm is not set to sha256 or sha512, this is a finding.
Fix Text (F-31215r1_fix)
Change the default password algorithm.
# authconfig --passalgo=sha512 --update