ACF2 TSOCRT GSO record values must be set to obliterate the logon to ASCII CRT devices.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-223510	SRG-OS-000079-GPOS-00047	ACF2-ES-000930	SV-223510r958470_rule	2025-03-11	9

Description
To prevent the compromise of authentication information, such as passwords during the authentication process, the feedback from the operating system must not provide any information allowing an unauthorized user to compromise the authentication mechanism. Obfuscation of user-provided information that is typed into the system is a method used when addressing this risk. Displaying asterisks when a user types in a password is an example of obscuring feedback of authentication information.

Description

To prevent the compromise of authentication information, such as passwords during the authentication process, the feedback from the operating system must not provide any information allowing an unauthorized user to compromise the authentication mechanism. Obfuscation of user-provided information that is typed into the system is a method used when addressing this risk. Displaying asterisks when a user types in a password is an example of obscuring feedback of authentication information.

ℹ️ Check
From the ISPF Command Shell enter: ACF SET CONTROL(GSO) <enter> LIST TSOCRT If the GSO TSOCRT record values conform to the following requirements, this is not a finding. STRING(A12FA11C1A270C0D)

✔️ Fix
Define a clear string used to obliterate the logon to ASCII CRT devices. STRING(A12FA11C1A270C0D) Example: SET C(GSO) INSERT TSOCRT STRING(A12FA11C1A270C0D) F ACF2,REFRESH(TSOCRT)