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IBM z/OS TSS Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000066-GPOS-00034

    <GroupDescription></GroupDescription>
    Group
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  • Expired IBM z/OS digital certificates must not be used.

    &lt;VulnDiscussion&gt;Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate n...
    Rule Medium Severity
    Show

  • SRG-OS-000104-GPOS-00051

    <GroupDescription></GroupDescription>
    Group
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  • IBM z/OS must have Certificate Name Filtering implemented with appropriate authorization and documentation.

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...
    Rule Medium Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
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  • CA-TSS Security control ACIDs must be limited to the administrative authorities authorized and that require these privileges to perform their job duties.

    &lt;VulnDiscussion&gt;The use of security policy filters provides protection for the confidentiality of data by restricting the flow of data. A cru...
    Rule High Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
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  • The number of CA-TSS ACIDs possessing the tape Bypass Label Processing (BLP) privilege must be limited.

    &lt;VulnDiscussion&gt;The use of security policy filters provides protection for the confidentiality of data by restricting the flow of data. A cru...
    Rule Medium Severity
    Show

  • SRG-OS-000001-GPOS-00001

    <GroupDescription></GroupDescription>
    Group
    Show

  • CA-TSS MODE Control Option must be set to FAIL.

    &lt;VulnDiscussion&gt;Enterprise environments make account management challenging and complex. A manual process for account management functions ad...
    Rule High Severity
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS NPWRTHRESH Control Option must be properly set.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Medium Severity
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS NPPTHRESH Control Option must be properly set.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Medium Severity
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS PTHRESH Control Option must be set to 2.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Medium Severity
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS NPPTHRESH Control Option must be properly set.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Medium Severity
    Show

  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
    Show

  • IBM z/OS must limit access for SMF collection files (i.e., SYS1.MANx) to appropriate users and/or batch jobs that perform SMF dump processing.

    &lt;VulnDiscussion&gt;SMF data collection is the system activity journaling facility of the z/OS system. Unauthorized access could result in the co...
    Rule Medium Severity
    Show

  • SRG-OS-000063-GPOS-00032

    <GroupDescription></GroupDescription>
    Group
    Show

  • IBM z/OS SYS1.PARMLIB must be properly protected.

    &lt;VulnDiscussion&gt;Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel ma...
    Rule High Severity
    Show

  • SRG-OS-000067-GPOS-00035

    <GroupDescription></GroupDescription>
    Group
    Show

  • IBM z/OS for PKI-based authentication must use ICSF or the ESM to store keys.

    &lt;VulnDiscussion&gt;If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the ne...
    Rule Medium Severity
    Show

  • SRG-OS-000069-GPOS-00037

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS NEWPHRASE and PPSCHAR Control Options must be properly set.

    &lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...
    Rule Medium Severity
    Show

  • SRG-OS-000071-GPOS-00039

    <GroupDescription></GroupDescription>
    Group
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  • The CA-TSS NEWPW control options must be properly set.

    &lt;VulnDiscussion&gt;If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI b...
    Rule Medium Severity
    Show

  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
    Group
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  • IBM z/OS must use NIST FIPS-validated cryptography to protect passwords in the security database.

    &lt;VulnDiscussion&gt;Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are...
    Rule High Severity
    Show

  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS PWEXP Control Option must be set to 60.

    &lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the ...
    Rule Medium Severity
    Show

  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS PPEXP Control Option must be properly set.

    &lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the ...
    Rule Medium Severity
    Show

  • SRG-OS-000077-GPOS-00045

    <GroupDescription></GroupDescription>
    Group
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  • The CA-TSS PWHIST Control Option must be set to 10 or greater.

    &lt;VulnDiscussion&gt;Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...
    Rule Medium Severity
    Show

  • SRG-OS-000077-GPOS-00045

    <GroupDescription></GroupDescription>
    Group
    Show

  • The CA-TSS PPHIST Control Option must be properly set.

    &lt;VulnDiscussion&gt;Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...
    Rule Medium Severity
    Show

  • SRG-OS-000078-GPOS-00046

    <GroupDescription></GroupDescription>
    Group
    Show

  • The IBM z/OS operating system must enforce a minimum eight-character password length.

    &lt;VulnDiscussion&gt;The shorter the password, the lower the number of possible combinations that need to be tested before the password is comprom...
    Rule Medium Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
    Show

  • CA-TSS access to SYS1.LINKLIB must be properly protected.

    &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
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
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  • CA-TSS must limit Write or greater access to SYS1.SVCLIB to system programmers only.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...
    Rule High Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
    Show

  • CA-TSS must limit Write or greater access to SYS1.IMAGELIB to system programmers only.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...
    Rule High Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
    Show

  • CA-TSS must limit Write or greater access to SYS1.LPALIB to system programmers only.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...
    Rule High Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
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  • CA-TSS must limit WRITE or greater access to all APF-authorized libraries to system programmers only.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...
    Rule High Severity
    Show

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