CA VM:Secure product Config Delay LOG option must be set to 0.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-237916	SRG-OS-000480-GPOS-00226	IBMZ-VM-000590	SV-237916r858966_rule	2022-08-31	2

Description
IBM z/VM 6.4.0 made changes to obscure whether a logon is invalid due to the user ID or due to the password. Both the logon prompting sequence and the message HCPLGA050E were changed. However, DELAYLOG causes a delay for a logon with an invalid password that it does not cause when the user ID is invalid. Thus, if you are using DELAYLOG with z/VM 6.4.0, you can inadvertently let someone trying to break into your system know that it is the password that is invalid.

Description

IBM z/VM 6.4.0 made changes to obscure whether a logon is invalid due to the user ID or due to the password. Both the logon prompting sequence and the message HCPLGA050E were changed. However, DELAYLOG causes a delay for a logon with an invalid password that it does not cause when the user ID is invalid. Thus, if you are using DELAYLOG with z/VM 6.4.0, you can inadvertently let someone trying to break into your system know that it is the password that is invalid.

ℹ️ Check
Display the CA VM:Secure product Config file. If the "DELAYLOG" record does not exist, this is not a finding. If the "DELAYLOG" record is set to "0", this is not a finding.

✔️ Fix
Configure DELAYLOG = 0 or delete the "DELAYLOG" configuration file record.