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II - Mission Support Sensitive

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000138-GPOS-00069

    <GroupDescription></GroupDescription>
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  • TOSS must prevent unauthorized and unintended information transfer via shared system resources.

    &lt;VulnDiscussion&gt;Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of infor...
    Rule Medium Severity
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  • SRG-OS-000142-GPOS-00071

    <GroupDescription></GroupDescription>
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  • The TOSS operating system must be configured to use TCP syncookies.

    &lt;VulnDiscussion&gt;Denial of Service (DoS) is a condition when a resource is not available for legitimate users. When this occurs, the organizat...
    Rule Medium Severity
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  • SRG-OS-000228-GPOS-00088

    <GroupDescription></GroupDescription>
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  • TOSS must display the Standard Mandatory DoD Notice and Consent Banner or equivalent US Government Agency Notice and Consent Banner before granting local or remote access to the system via a ssh logon.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to TOSS ensures privacy and security notificat...
    Rule Low Severity
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  • SRG-OS-000250-GPOS-00093

    <GroupDescription></GroupDescription>
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  • The TOSS operating system must implement DoD-approved encryption to protect the confidentiality of SSH connections.

    &lt;VulnDiscussion&gt;Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote acce...
    Rule Medium Severity
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  • SRG-OS-000250-GPOS-00093

    <GroupDescription></GroupDescription>
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  • The TOSS operating system must implement DoD-approved TLS encryption in the GnuTLS package.

    &lt;VulnDiscussion&gt;Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Transport L...
    Rule Medium Severity
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  • SRG-OS-000250-GPOS-00093

    <GroupDescription></GroupDescription>
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  • The TOSS SSH daemon must be configured to use only Message Authentication Codes (MACs) employing FIPS 140-2 validated cryptographic hash algorithms.

    &lt;VulnDiscussion&gt;Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote acce...
    Rule Medium Severity
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  • SRG-OS-000269-GPOS-00103

    <GroupDescription></GroupDescription>
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  • The TOSS operating system must be configured to preserve log records from failure events.

    &lt;VulnDiscussion&gt;Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Fa...
    Rule Medium Severity
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  • SRG-OS-000355-GPOS-00143

    <GroupDescription></GroupDescription>
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  • TOSS must, for networked systems, compare internal information system clocks at least every 24 hours with a server which is synchronized to one of the redundant United States Naval Observatory (USNO) time servers, or a time server designated for the appropriate DOD network (NIPRNet/SIPRNet), and/or the Global Positioning System (GPS).

    &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-000363-GPOS-00150

    <GroupDescription></GroupDescription>
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  • The TOSS file integrity tool must notify the system administrator when changes to the baseline configuration or anomalies in the operation of any security functions are discovered within an organizationally defined frequency.

    &lt;VulnDiscussion&gt;Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized ...
    Rule Medium Severity
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  • SRG-OS-000366-GPOS-00153

    <GroupDescription></GroupDescription>
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  • TOSS must prevent the installation of patches, service packs, device drivers, or operating system components without verification they have been digitally signed using a certificate that is recognized and approved by the organization.

    &lt;VulnDiscussion&gt;Changes to any software components can have significant effects on the overall security of the operating system. This require...
    Rule High Severity
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