Title

The IBM RACF classes required to properly secure the z/OS UNIX environment must be ACTIVE. (Cat II impact)

Discussion

In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invoking such applications/programs, those users are indirectly provided with greater privileges than assigned by the organizations.

Check Content

From the ISPF Command Shell enter: SETRopts list If the ACTIVE CLASSES list includes entries for the FACILITY, SURROGAT, and UNIXPRIV resource classes, this is not a finding. If either of the above resource classes is missing, this is a finding.

Fix Text

Define the ACTIVE CLASS Parameter in SETROPTS to include the FACILITY, SURROGAT and UNIXPRIV resource classes. EXAMPLES: SETR CLASSACT(FACILITY SURROGAT UNIXPRIV) SETR GENERIC(FACILITY SURROGAT UNIXPRIV) SETR GENCMD(FACILITY SURROGAT UNIXPRIV) SETR RACL(FACILITY SURROGAT UNIXPRIV)

Additional Identifiers

Rule ID: SV-223850r853640_rule

Vulnerability ID: V-223850

Group Title: SRG-OS-000326-GPOS-00126

Expert Comments

CCIs tied to check.

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