Title

The password history must be configured to 24 passwords remembered. (Cat II impact)

Discussion

A system is more vulnerable to unauthorized access when system users recycle the same password several times without being required to change a password to a unique password on a regularly scheduled basis. This enables users to effectively negate the purpose of mandating periodic password changes. The default value is 24 for Windows domain systems. DoD has decided this is the appropriate value for all Windows systems.

Check Content

Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Account Policies >> Password Policy. If the value for "Enforce password history" is less than "24" passwords remembered, this is a finding.

Fix Text

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Enforce password history" to "24" passwords remembered.

Additional Identifiers

Rule ID: SV-29651r2_rule

Vulnerability ID: V-1107

Group Title: Password Uniqueness

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.