Title

ACF2 TSOTWX GSO record values must be set to obliterate the logon password on TWX devices. (Cat II impact)

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 Content

From the ISPF Command Shell enter: ACF <enter> SET CONTROL(GSO) LIST TSOTWX If the GSO TSOTWX record values conform to the following requirements, this is not a finding. CR(15) IDLE(17) LENGTH(8) M1(X) M2(N) M3(Z) M4(M) STRING()

Fix Text

Define a cross out mask to obliterate the logon password on TWX devices. CR(15) IDLE(17) LENGTH(8) M1(X) M2(N) M3(Z) M4(M) STRING() Example: SET C(GSO) INSERT TSOTWX CR(15) IDLE(17) LENGTH(8) M1(X) M2(N) M3(Z) M4(M) STRING() F ACF2,REFRESH(TSOTWX)

Additional Identifiers

Rule ID: SV-223509r695443_rule

Vulnerability ID: V-223509

Group Title: SRG-OS-000079-GPOS-00047

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.