Check: RACF0450
zOS RACF STIG:
RACF0450
(in versions v6 r43 through v6 r30)
Title
The PASSWORD(REVOKE) SETROPTS value specified is not in accordance with security requirements. (Cat II impact)
Discussion
(RACF0450: CAT II) The IAO will ensure that PASSWORD(REVOKE) SETROPTS value is set to 1 or 2. This value specifies the number of consecutive incorrect password attempts RACF allows before it revokes the USERID on the next incorrect attempt. If you specify REVOKE, ensure INITSTATS are in effect. 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.
Check Content
a) 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(RACF0450) b) If the PASSWORD(REVOKE) value shows "AFTER <n> CONSECUTIVE UNSUCCESSFUL PASSWORD ATTEMPTS, A USERID WILL BE REVOKED." where <n> is either 1 or 2, there is NO FINDING. c) If the PASSWORD(REVOKE) value is not enabled and is not set to either 1 or 2, this is a FINDING.
Fix Text
The IAO will ensure that PASSWORD(REVOKE) SETROPTS value is set to 1 or 2. This specifies the number of consecutive incorrect password attempts RACF allows before it revokes the USERID on the next incorrect attempt. If you specify REVOKE, ensure INITSTATS are in effect. 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 REVOKE. (1) Setting the password REVOKE to 2 invalid attempts activated with the command SETR PASSWORD(REVOKE(2)).
Additional Identifiers
Rule ID: SV-273r2_rule
Vulnerability ID: V-273
Group Title: RACF0450
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000044 |
The information system enforces the organization-defined limit of consecutive invalid logon attempts by a user during the organization-defined time period. |
| CCI-002238 |
The information system automatically locks the account or node for either an organization-defined time period, until the locked account or node is released by an administrator, or delays the next logon prompt according to the organization-defined delay algorithm when the maximum number of unsuccessful logon attempts is exceeded. |
Controls
| Number | Title |
|---|---|
| AC-7 |
Unsuccessful Logon Attempts |