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II - Mission Support Public

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
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  • The macOS system must be configured with the SSH daemon ClientAliveInterval option set to 900 or less.

    &lt;VulnDiscussion&gt;Terminating an idle session within a short time reduces the window of opportunity for unauthorized personnel to take control ...
    Rule Medium Severity
    Show

  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
    Group
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  • The macOS system must be configured with the SSH daemon ClientAliveCountMax option set to 1.

    &lt;VulnDiscussion&gt;Terminating an idle session within a short time reduces the window of opportunity for unauthorized personnel to take control ...
    Rule Medium Severity
    Show

  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
    Group
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  • The macOS system must be configured with the SSH daemon LoginGraceTime set to 30 or less.

    &lt;VulnDiscussion&gt;SSH must be configured to log users out after a 15-minute interval of inactivity and to wait only 30 seconds before timing ou...
    Rule Medium Severity
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  • SRG-OS-000033-GPOS-00014

    <GroupDescription></GroupDescription>
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  • The macOS system must implement approved ciphers to protect the confidentiality of SSH connections.

    &lt;VulnDiscussion&gt;Unapproved mechanisms for authentication to the cryptographic module are not verified and therefore cannot be relied on to pr...
    Rule High Severity
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  • SRG-OS-000033-GPOS-00014

    <GroupDescription></GroupDescription>
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  • The macOS system must implement approved Message Authentication Codes (MACs).

    &lt;VulnDiscussion&gt;Unapproved mechanisms for authentication to the cryptographic module are not verified and therefore cannot be relied on to pr...
    Rule High Severity
    Show

  • SRG-OS-000033-GPOS-00014

    <GroupDescription></GroupDescription>
    Group
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  • The macOS system must implement approved Key Exchange Algorithms.

    &lt;VulnDiscussion&gt;Unapproved mechanisms for authentication to the cryptographic module are not verified and therefore cannot be relied on to pr...
    Rule High Severity
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  • SRG-OS-000004-GPOS-00004

    <GroupDescription></GroupDescription>
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  • The macOS system must generate audit records for all account creations, modifications, disabling, and termination events; privileged activities or other system-level access; all kernel module load, unload, and restart actions; all program initiations; and organizationally defined events for all nonlocal maintenance and diagnostic sessions.

    &lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficu...
    Rule Medium Severity
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  • SRG-OS-000032-GPOS-00013

    <GroupDescription></GroupDescription>
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  • The macOS system must monitor remote access methods and generate audit records when successful/unsuccessful attempts to access/modify privileges occur.

    &lt;VulnDiscussion&gt;Frequently, an attacker that successfully gains access to a system has only gained access to an account with limited privileg...
    Rule Medium Severity
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  • SRG-OS-000037-GPOS-00015

    <GroupDescription></GroupDescription>
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  • The macOS system must produce audit records containing information to establish when, where, what type, the source, and the outcome for all DOD-defined auditable events and actions.

    &lt;VulnDiscussion&gt;Without establishing what type of events occurred, when they occurred, and by whom, it would be difficult to establish, corre...
    Rule Medium Severity
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  • SRG-OS-000047-GPOS-00023

    <GroupDescription></GroupDescription>
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  • The macOS system must shut down by default upon audit failure (unless availability is an overriding concern).

    &lt;VulnDiscussion&gt;The audit service should shut down the computer if it is unable to audit system events. Once audit failure occurs, user and s...
    Rule Medium Severity
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