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IBM z/OS TSS Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000356-GPOS-00144

    <GroupDescription></GroupDescription>
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  • IBM z/OS PARMLIB CLOCKxx must have the Accuracy PARM coded properly.

    &lt;VulnDiscussion&gt;Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the cor...
    Rule Medium Severity
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  • SRG-OS-000420-GPOS-00186

    <GroupDescription></GroupDescription>
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  • IBM z/OS must employ a session manager to manage retaining a users session lock until that user reestablishes access using established identification and authentication procedures.

    &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
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  • 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 IBM z/OS 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
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • IBM z/OS must configure system wait times to protect resource availability based on site priorities.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...
    Rule Medium Severity
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  • SRG-OS-000031-GPOS-00012

    <GroupDescription></GroupDescription>
    Group
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  • IBM z/OS must employ a session manager to conceal, 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
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  • SRG-OS-000029-GPOS-00010

    <GroupDescription></GroupDescription>
    Group
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  • IBM z/OS must employ a session manager to initiate a session lock after a 15-minute period of inactivity for all connection types.

    &lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...
    Rule Medium Severity
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  • SRG-OS-000028-GPOS-00009

    <GroupDescription></GroupDescription>
    Group
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  • SRG-OS-000002-GPOS-00002

    <GroupDescription></GroupDescription>
    Group
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  • IBM z/OS system administrator must develop a procedure to remove all software components after updated versions have been installed.

    &lt;VulnDiscussion&gt;Previous versions of software components that are not removed from the information system after updates have been installed m...
    Rule Medium Severity
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  • IBM z/OS system administrator (SA) must develop a procedure to remove or disable temporary user accounts after 72 hours.

    &lt;VulnDiscussion&gt;If temporary user accounts remain active when no longer needed or for an excessive period, these accounts may be used to gain...
    Rule Medium Severity
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  • SRG-OS-000123-GPOS-00064

    <GroupDescription></GroupDescription>
    Group
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  • IBM z/OS system administrator (SA) must develop a procedure to remove or disable emergency accounts after the crisis is resolved or 72 hours.

    &lt;VulnDiscussion&gt;Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid acc...
    Rule Medium Severity
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  • SRG-OS-000304-GPOS-00121

    <GroupDescription></GroupDescription>
    Group
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  • IBM z/OS system administrator (SA) must develop a procedure to notify SAs and information system security officers (ISSOs) of account enabling actions.

    &lt;VulnDiscussion&gt;Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...
    Rule Medium Severity
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  • SRG-OS-000363-GPOS-00150

    <GroupDescription></GroupDescription>
    Group
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