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Check: ACF2-ES-000900

IBM z/OS ACF2 STIG: ACF2-ES-000900 (in versions v8 r15 through v8 r2)

Title

ACF2 PSWD GSO record value must be set to require 24 hours/1 day as the minimum password lifetime. (Cat II impact)

Discussion

Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, then the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.

Check Content

From an ACF command screen enter: SET CONTROL(GSO) LIST PSWD If "PSWDMIN" is set "1", this is not a finding.

Fix Text

Configure Password option "PSWDMIN" to minimum of "1" day.

Additional Identifiers

Rule ID: SV-223507r695439_rule

Vulnerability ID: V-223507

Group Title: SRG-OS-000075-GPOS-00043

Expert Comments

Expert comments are only available to logged-in users.

CCIs

CCIs tied to check.

Number	Definition
CCI-000198	The information system enforces minimum password lifetime restrictions.

Controls

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

Number	Title
IA-5 (1)	Password-Based Authentication