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IBM z/OS RACF Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The IBM z/OS Policy Agent must employ a deny-all, allow-by-exception firewall policy for allowing connections to other systems.

    <VulnDiscussion>Failure to restrict network connectivity only to authorized systems permits inbound connections from malicious systems. It al...
    Rule Medium Severity
  • SRG-OS-000368-GPOS-00154

    <GroupDescription></GroupDescription>
    Group
  • Unsupported system software must not be installed and/ or active on the system.

    &lt;VulnDiscussion&gt;Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may pr...
    Rule High Severity
  • SRG-OS-000368-GPOS-00154

    <GroupDescription></GroupDescription>
    Group
  • IBM z/OS must not allow nonexistent or inaccessible LINKLIST libraries.

    &lt;VulnDiscussion&gt;Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may pr...
    Rule Medium Severity
  • SRG-OS-000368-GPOS-00154

    <GroupDescription></GroupDescription>
    Group
  • IBM z/OS must not allow nonexistent or inaccessible Link Pack Area (LPA) libraries.

    &lt;VulnDiscussion&gt;Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may pr...
    Rule Medium Severity
  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
  • IBM z/OS must not have inaccessible APF libraries defined.

    &lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission ob...
    Rule Medium Severity
  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
  • IBM zOS inapplicable PPT entries must be invalidated.

    &lt;VulnDiscussion&gt;It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission ob...
    Rule Medium Severity
  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
  • The IBM z/OS systems requiring data-at-rest protection must properly employ IBM DS8880 or equivalent hardware solutions for full disk encryption.

    &lt;VulnDiscussion&gt;This control addresses the confidentiality and integrity of information at rest and covers user information and system inform...
    Rule High Severity
  • SRG-OS-000420-GPOS-00186

    <GroupDescription></GroupDescription>
    Group
  • The IBM z/OS Policy Agent must contain a policy that protects against or limits the effects of denial-of-service (DoS) attacks by ensuring the operating system is implementing rate-limiting measures on impacted network interfaces.

    &lt;VulnDiscussion&gt;DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot ac...
    Rule Medium Severity
  • SRG-OS-000142-GPOS-00071

    <GroupDescription></GroupDescription>
    Group
  • The IBM z/OS Policy Agent must contain a policy that manages excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial-of-service (DoS) attacks.

    &lt;VulnDiscussion&gt;DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot ac...
    Rule Medium Severity
  • SRG-OS-000031-GPOS-00012

    <GroupDescription></GroupDescription>
    Group
  • The IBM z/OS must employ a session manager that conceals, via the session lock, information previously visible on the display with a publicly viewable image.

    &lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the ...
    Rule Medium Severity
  • SRG-OS-000029-GPOS-00010

    <GroupDescription></GroupDescription>
    Group

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