The system must enforce compliance of the entire password during authentification.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22302	GEN000585	SV-37261r2_rule		Medium

Description
Some common password hashing schemes only process the first eight characters of a user's password, which reduces the effective strength of the password.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2017-03-01

Details

Check Text ( C-35951r3_chk )
Verify no valid password hash in /etc/passwd or /etc/shadow begins with a character other than an underscore (_) or dollar sign ($). # cut -d ':' -f2 /etc/passwd # cut -d ':' -f2 /etc/shadow If any valid password hash is present that does not have an initial underscore (_) or dollar sign ($) character, this is a finding. Note: Locked accounts are indicated by a leading exclamation point (!). System accounts, other than "root", may have an asterisk (*) in the password field. On systems utilizing shadow passwords, the password field in /etc/passwd will be a single "x".

Check Text ( C-35951r3_chk )

Verify no valid password hash in /etc/passwd or /etc/shadow begins with a character other than an underscore (_) or dollar sign ($).

# cut -d ':' -f2 /etc/passwd
# cut -d ':' -f2 /etc/shadow

If any valid password hash is present that does not have an initial underscore (_) or dollar sign ($) character, this is a finding.

Note: Locked accounts are indicated by a leading exclamation point (!). System accounts, other than "root", may have an asterisk (*) in the password field. On systems utilizing shadow passwords, the password field in /etc/passwd will be a single "x".

Fix Text (F-31207r1_fix)
Change the passwords for all accounts using non-compliant password hashes. (This requires GEN000590 is already met.)