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V-237916

CAT II (Medium)

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

Rule ID

SV-237916r858966_rule

STIG

IBM zVM Using CA VM:Secure Security Technical Implementation Guide

Version

V2R2

CCIs

CCI-000366

Discussion

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.

Check Content

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 Text

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