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Red Hat Enterprise Linux 8 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000480-GPOS-00225

    <GroupDescription></GroupDescription>
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  • Unattended or automatic logon via the RHEL 8 graphical user interface must not be allowed.

    &lt;VulnDiscussion&gt;Failure to restrict system access to authenticated users negatively impacts operating system security.&lt;/VulnDiscussion&gt;...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
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  • RHEL 8 must not allow users to override SSH environment variables.

    &lt;VulnDiscussion&gt;SSH environment options potentially allow users to bypass access restriction in some configurations.&lt;/VulnDiscussion&gt;&l...
    Rule Medium Severity
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  • SRG-OS-000002-GPOS-00002

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  • SRG-OS-000480-GPOS-00227

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  • The RHEL 8 SSH daemon must not allow Kerberos authentication, except to fulfill documented and validated mission requirements.

    &lt;VulnDiscussion&gt;Configuring these settings for the SSH daemon provides additional assurance that remote logon via SSH will not use unused met...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • RHEL 8 must use a separate file system for /var.

    &lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becomi...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • RHEL 8 must use a separate file system for /var/log.

    &lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becomi...
    Rule Low Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • RHEL 8, for PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor.

    &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
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  • SRG-OS-000067-GPOS-00035

    <GroupDescription></GroupDescription>
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  • RHEL 8 must use a separate file system for the system audit data path.

    &lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becomi...
    Rule Low Severity
    Show

  • RHEL 8, for certificate-based authentication, must enforce authorized access to the corresponding private key.

    &lt;VulnDiscussion&gt;If an unauthorized user obtains access to a private key without a passcode, that user would have unauthorized access to any s...
    Rule Medium Severity
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  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
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  • SRG-OS-000480-GPOS-00227

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  • SRG-OS-000138-GPOS-00069

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  • A separate RHEL 8 filesystem must be used for the /tmp directory.

    &lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becomi...
    Rule Medium Severity
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  • SRG-OS-000109-GPOS-00056

    <GroupDescription></GroupDescription>
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  • SRG-OS-000480-GPOS-00227

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  • RHEL 8 vendor packaged system security patches and updates must be installed and up to date.

    &lt;VulnDiscussion&gt;Timely patching is critical for maintaining the operational availability, confidentiality, and integrity of information techn...
    Rule Medium Severity
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  • SRG-OS-000033-GPOS-00014

    <GroupDescription></GroupDescription>
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  • RHEL 8 must implement NIST FIPS-validated cryptography for the following: To provision digital signatures, to generate cryptographic hashes, and to protect data requiring data-at-rest protections in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.

    &lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The operating syst...
    Rule High Severity
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  • SRG-OS-000185-GPOS-00079

    <GroupDescription></GroupDescription>
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  • All RHEL 8 local disk partitions must implement cryptographic mechanisms to prevent unauthorized disclosure or modification of all information that requires at rest protection.

    &lt;VulnDiscussion&gt;RHEL 8 systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorize...
    Rule Medium Severity
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  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
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  • RHEL 8 must not permit direct logons to the root account using remote access via SSH.

    &lt;VulnDiscussion&gt;Even though the communications channel may be encrypted, an additional layer of security is gained by extending the policy of...
    Rule Medium Severity
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  • RHEL 8 must display the Standard Mandatory DOD 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 the operating system ensures privacy and se...
    Rule Medium Severity
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  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
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  • RHEL 8 must display the Standard Mandatory DoD Notice and Consent Banner before granting local or remote access to the system via a graphical user logon.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and se...
    Rule Medium Severity
    Show

  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
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  • RHEL 8 must display the Standard Mandatory DoD Notice and Consent Banner before granting local or remote access to the system via a command line user logon.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and se...
    Rule Medium Severity
    Show

  • SRG-OS-000032-GPOS-00013

    <GroupDescription></GroupDescription>
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  • All RHEL 8 remote access methods must be monitored.

    &lt;VulnDiscussion&gt;Remote access services, such as those providing remote access to network devices and information systems, which lack automate...
    Rule Medium Severity
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  • SRG-OS-000066-GPOS-00034

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  • SRG-OS-000480-GPOS-00227

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  • RHEL 8 must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm.

    &lt;VulnDiscussion&gt;Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are...
    Rule Medium Severity
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  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
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  • RHEL 8 must employ FIPS 140-2 approved cryptographic hashing algorithms for all stored passwords.

    &lt;VulnDiscussion&gt;The system must use a strong hashing algorithm to store the password. Passwords need to be protected at all times, and encry...
    Rule Medium Severity
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  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
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  • The RHEL 8 shadow password suite must be configured to use a sufficient number of hashing rounds.

    &lt;VulnDiscussion&gt;The system must use a strong hashing algorithm to store the password. The system must use a sufficient number of hashing roun...
    Rule Medium Severity
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  • SRG-OS-000080-GPOS-00048

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  • RHEL 8 operating systems booted with United Extensible Firmware Interface (UEFI) must require authentication upon booting into single-user mode and maintenance.

    &lt;VulnDiscussion&gt;If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes ...
    Rule High Severity
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  • SRG-OS-000080-GPOS-00048

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  • RHEL 8 operating systems booted with a BIOS must require authentication upon booting into single-user and maintenance modes.

    &lt;VulnDiscussion&gt;If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes ...
    Rule High Severity
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  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
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  • RHEL 8 operating systems must require authentication upon booting into rescue mode.

    &lt;VulnDiscussion&gt;If the system does not require valid root authentication before it boots into emergency or rescue mode, anyone who invokes em...
    Rule Medium Severity
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  • SRG-OS-000120-GPOS-00061

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Node 2

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