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General Purpose Operating System Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000477

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  • The operating system must generate audit records for all kernel module load, unload, and restart actions, and also for all program initiations.

    &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-000478

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  • The operating system must implement NIST FIPS-validated cryptography for the following: to provision digital signatures, to generate cryptographic hashes, and to protect unclassified information requiring confidentiality and cryptographic protection 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 utilizing encryption to protect data. The operating ...
    Rule High Severity
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  • SRG-OS-000479

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  • The operating system must, at a minimum, off-load audit data from interconnected systems in real time and off-load audit data from standalone systems weekly.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common...
    Rule Medium Severity
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  • SRG-OS-000480

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  • The operating system must prevent the use of dictionary words for passwords.

    &lt;VulnDiscussion&gt;If the operating system allows the user to select passwords based on dictionary words, then this increases the chances of pas...
    Rule Medium Severity
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  • SRG-OS-000480

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  • The operating system must enforce a delay of at least 4 seconds between logon prompts following a failed logon attempt.

    &lt;VulnDiscussion&gt;Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain acc...
    Rule Medium Severity
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  • SRG-OS-000480

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  • The operating system must be configured in accordance with the security configuration settings based on DoD security configuration or implementation guidance, including STIGs, NSA configuration guides, CTOs, and DTMs.

    &lt;VulnDiscussion&gt;Configuring the operating system to implement organization-wide security implementation guides and security checklists ensure...
    Rule Medium Severity
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  • SRG-OS-000480

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  • The operating system must protect the confidentiality and integrity of communications with wireless peripherals.

    &lt;VulnDiscussion&gt;Without protection of communications with wireless peripherals, confidentiality and integrity may be compromised because unpr...
    Rule High Severity
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  • SRG-OS-000439

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  • The operating system must install security-relevant software updates within the time period directed by an authoritative source (e.g., IAVM, CTOs, DTMs, and STIGs).

    &lt;VulnDiscussion&gt;Security flaws with operating systems are discovered daily. Vendors are constantly updating and patching their products to ad...
    Rule Medium Severity
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  • SRG-OS-000590

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  • The operating system must disable accounts when the accounts are no longer associated to a user.

    &lt;VulnDiscussion&gt;Disabling expired, inactive, or otherwise anomalous accounts supports the concepts of least privilege and least functionality...
    Rule Medium Severity
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  • SRG-OS-000690

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  • The operating system must prohibit the use or connection of unauthorized hardware components.

    &lt;VulnDiscussion&gt;Hardware components provide the foundation for organizational systems and the platform for the execution of authorized softwa...
    Rule Medium Severity
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  • SRG-OS-000705

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  • The operating system must implement multifactor authentication for local, network, and/or remote access to privileged accounts and/or nonprivileged accounts such that the device meets organization-defined strength of mechanism requirements.

    &lt;VulnDiscussion&gt;The purpose of requiring a device separate from the system to which the user is attempting to gain access for one of the fact...
    Rule Medium Severity
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  • SRG-OS-000710

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  • The operating system must, for password-based authentication, verify when users create or update passwords the passwords are not found on the list of commonly-used, expected, or compromised passwords in IA-5 (1) (a).

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
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  • SRG-OS-000720

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  • The operating system must for password-based authentication, require immediate selection of a new password upon account recovery.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
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  • SRG-OS-000725

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  • The operating system must for password-based authentication, allow user selection of long passwords and passphrases, including spaces and all printable characters.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
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  • SRG-OS-000730

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  • The operating system must, for password-based authentication, employ automated tools to assist the user in selecting strong password authenticators.

    &lt;VulnDiscussion&gt;Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authen...
    Rule Medium Severity
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  • SRG-OS-000745

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  • The operating system must accept only external credentials that are NIST-compliant.

    &lt;VulnDiscussion&gt;Acceptance of only NIST-compliant external authenticators applies to organizational systems that are accessible to the public...
    Rule Medium Severity
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  • SRG-OS-000755

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  • The operating system must monitor the use of maintenance tools that execute with increased privilege.

    &lt;VulnDiscussion&gt;Maintenance tools that execute with increased system privilege can result in unauthorized access to organizational informatio...
    Rule Medium Severity
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  • SRG-OS-000775

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  • The operating system must include only approved trust anchors in trust stores or certificate stores managed by the organization.

    &lt;VulnDiscussion&gt;Public key infrastructure (PKI) certificates are certificates with visibility external to organizational systems and certific...
    Rule Medium Severity
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  • SRG-OS-000780

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  • The operating system must provide protected storage for cryptographic keys with organization-defined safeguards and/or hardware protected key store.

    &lt;VulnDiscussion&gt;A Trusted Platform Module (TPM) is an example of a hardware-protected data store that can be used to protect cryptographic ke...
    Rule Medium Severity
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  • SRG-OS-000785

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  • The operating system must synchronize system clocks within and between systems or system components.

    &lt;VulnDiscussion&gt;Time synchronization of system clocks is essential for the correct execution of many system services, including identificatio...
    Rule Medium Severity
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  • SRG-OS-000805

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  • The operating system must employ automated patch management tools to facilitate flaw remediation to the organization-defined system components.

    &lt;VulnDiscussion&gt;Using automated tools to support patch management helps to ensure the timeliness and completeness of system patching operatio...
    Rule Medium Severity
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