STIGUI
V-223510CAT II — Medium severitySV-223510r1225974_rule

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

Rule version ACF2-ES-000930 · STIG v9 · 2026-09-01

Discussion

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.

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)

Identifiers

Group ID
V-223510
Group title
SRG-OS-000079-GPOS-00047
Rule ID
SV-223510r1225974_rule
Check ID
C-25183r500663_chk
Fix ID
F-25171r500664_fix