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V-261392

CAT I (High)

SLEM 5 shadow password suite must be configured to use a sufficient number of hashing rounds.

Rule ID

SV-261392r1184425_rule

STIG

SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide

Version

V1R4

CCIs

CCI-000196 CCI-000803

Discussion

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.

Check Content

Verify SLEM 5 shadow password suite is configured to encrypt passwords using sufficient number of hashing rounds.

     > egrep "^SHA_CRYPT_" /etc/login.defs
     SHA_CRYPT_MIN_ROUNDS 100000
     SHA_CRYPT_MAX_ROUNDS 100000

If only one of "SHA_CRYPT_MIN_ROUNDS" or "SHA_CRYPT_MAX_ROUNDS" is set, and this value is below "100000", this is a finding.

If both "SHA_CRYPT_MIN_ROUNDS" and "SHA_CRYPT_MAX_ROUNDS" are set, and the highest value for either is below "100000", this is a finding.

Fix Text

Configure SLEM 5 shadow password suite to encrypt passwords using sufficient number of hashing rounds.

Add or modify the following line in the "/etc/login.defs" file:

SHA_CRYPT_MIN_ROUNDS 100000