The PASSWORD(MINCHANGE) value must be specified as (1).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-263	RACF0445	SV-263r3_rule		Medium

Description
MINCHANGE specifies the number of days that must pass between a user’s password and password phrase changes. Users can not change their own passwords and password phrases within the minimum change interval. The system-wide options control the default settings for determining how the ACP will function when handling requests for access to the operating system environment, ACP, and customer data. The ACP provides the ability to set a number of these fields at the subsystem level. If no setting is found, the system-wide defaults will be used. The improper setting of any of these fields, individually or in combination with another, can compromise the security of the processing environment. In addition, failure to establish standardized settings for the ACP control options introduces the possibility of exposure during migration process or contingency plan activation.

Description

MINCHANGE specifies the number of days that must pass between a user’s password and password phrase changes. Users can not change their own passwords and password phrases within the minimum change interval. The system-wide options control the default settings for determining how the ACP will function when handling requests for access to the operating system environment, ACP, and customer data. The ACP provides the ability to set a number of these fields at the subsystem level. If no setting is found, the system-wide defaults will be used. The improper setting of any of these fields, individually or in combination with another, can compromise the security of the processing environment. In addition, failure to establish standardized settings for the ACP control options introduces the possibility of exposure during migration process or contingency plan activation.

STIG	Date
z/OS RACF STIG	2018-12-20

Details

Check Text ( C-3211r2_chk )
Refer to the following report produced by the RACF Data Collection: - RACFCMDS.RPT(SETROPTS) Automated Analysis Refer to the following report produced by the RACF Data Collection: - PDI(RACF0445) If the PASSWORD(MINCHANGE) value shows "PASSWORD MINIMUM CHANGE INTERVAL IS <1> DAYS" this is not a finding.

Fix Text (F-201r1_fix)
The IAO will ensure that PASSWORD(MINCHANGE) SETROPTS value number from 1 to 59. This specifies the number of days that must pass before a user can change their password. Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option as specified in the example below: The RACF Command SETR LIST will show the status of RACF Controls including PASSWORD MINCHANGE. Use the following command as an example command: SETROPTS PASSWORD(MINCHANGE(1))

Fix Text (F-201r1_fix)

The IAO will ensure that PASSWORD(MINCHANGE) SETROPTS value number from 1 to 59. This specifies the number of days that must pass before a user can change their password.

Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option as specified in the example below:

The RACF Command SETR LIST will show the status of RACF Controls including PASSWORD MINCHANGE. Use the following command as an example command:

SETROPTS PASSWORD(MINCHANGE(1))