← Back to SUSE Linux Enterprise Server 15 Security Technical Implementation Guide

V-234888

CAT II (Medium)

The SUSE operating system must employ FIPS 140-3 approved cryptographic hashing algorithms for all stored passwords.

Rule ID

SV-234888r1044810_rule

STIG

SUSE Linux Enterprise Server 15 Security Technical Implementation Guide

Version

V2R7

CCIs

None

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. Satisfies: SRG-OS-000073-GPOS-00041, SRG-OS-000120-GPOS-00061

Check Content

Verify the SUSE operating system configures the shadow password suite configuration to encrypt passwords using a strong cryptographic hash.

Check that a minimum number of hash rounds is configured by running the following command:

> egrep "^SHA_CRYPT_" /etc/login.defs

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 the SUSE operating system to encrypt all stored passwords with a strong cryptographic hash.

Edit/modify the following line in the "/etc/login.defs" file and set "SHA_CRYPT_MIN_ROUNDS" to a value no lower than "100000":

SHA_CRYPT_MIN_ROUNDS 100000