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Apple macOS 15 (Sequoia) Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The macOS system must disable Bonjour multicast.

    <VulnDiscussion>Bonjour multicast advertising must be disabled to prevent the system from broadcasting its presence and available services ov...
    Rule Medium Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must disable iCloud Private Relay.

    &lt;VulnDiscussion&gt;Enterprise networks may be required to audit all network traffic by policy; therefore, iCloud Private Relay must be disabled....
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • SRG-OS-000028-GPOS-00009

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must prevent Apple Watch from terminating a session lock.

    &lt;VulnDiscussion&gt;Apple Watches are not an approved authenticator and their use must be disabled. Disabling Apple Watches is a necessary step ...
    Rule Medium Severity
    Show

  • SRG-OS-000028-GPOS-00009

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must enforce screen saver password.

    &lt;VulnDiscussion&gt;Users must authenticate when unlocking the screen saver. The screen saver acts as a session lock and prevents unauthorized u...
    Rule Medium Severity
    Show

  • SRG-OS-000028-GPOS-00009

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must enforce session lock no more than five seconds after screen saver is started.

    &lt;VulnDiscussion&gt;A screen saver must be enabled and the system must be configured to require a password to unlock once the screen saver has be...
    Rule Medium Severity
    Show

  • SRG-OS-000030-GPOS-00011

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must configure user session lock when a smart token is removed.

    &lt;VulnDiscussion&gt;The screen lock must be configured to initiate automatically when the smart token is removed from the system. Session locks ...
    Rule Medium Severity
    Show

  • SRG-OS-000031-GPOS-00012

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must disable hot corners.

    &lt;VulnDiscussion&gt;Hot corners must be disabled. The information system conceals, via the session lock, information previously visible on the d...
    Rule Medium Severity
    Show

  • SRG-OS-000031-GPOS-00012

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must prevent AdminHostInfo from being available at LoginWindow.

    &lt;VulnDiscussion&gt;The system must be configured to not display sensitive information at the LoginWindow. The key AdminHostInfo, when configured...
    Rule Medium Severity
    Show

  • SRG-OS-000002-GPOS-00002

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must automatically remove or disable temporary or emergency user accounts within 72 hours.

    &lt;VulnDiscussion&gt;The macOS system can be configured to set an automated termination for 72 hours or less for all temporary or emergency accoun...
    Rule Medium Severity
    Show

  • SRG-OS-000355-GPOS-00143

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must enforce time synchronization.

    &lt;VulnDiscussion&gt;Time synchronization must be enforced on all networked systems. This rule ensures the uniformity of time stamps for informat...
    Rule Medium Severity
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must limit consecutive failed login attempts to three.

    &lt;VulnDiscussion&gt;The macOS must be configured to limit the number of failed login attempts to a maximum of three. When the maximum number of f...
    Rule Medium Severity
    Show

  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must display a policy banner at remote login.

    &lt;VulnDiscussion&gt;Remote login service must be configured to display a policy banner at login. Displaying a standardized and approved use noti...
    Rule Medium Severity
    Show

  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must display the Standard Mandatory DOD Notice and Consent Banner at the login window.

    &lt;VulnDiscussion&gt;Displaying a standardized and approved use notification before granting access to the operating system ensures that users are...
    Rule Medium Severity
    Show

  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must configure audit log files to not contain access control lists (ACLs).

    &lt;VulnDiscussion&gt;The audit log files must not contain ACLs. This rule ensures that audit information and audit files are configured to be rea...
    Rule Medium Severity
    Show

  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must configure the audit log folder to not contain access control lists (ACLs).

    &lt;VulnDiscussion&gt;The audit log folder must not contain ACLs. Audit logs contain sensitive data about the system and users. This rule ensures ...
    Rule Medium Severity
    Show

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must disable FileVault automatic login.

    &lt;VulnDiscussion&gt;If FileVault is enabled, automatic login must be disabled so that both FileVault and login window authentication are required...
    Rule Medium Severity
    Show

  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
    Group
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must configure SSHD ClientAliveInterval to 900.

    &lt;VulnDiscussion&gt;If SSHD is enabled, it must be configured with the Client Alive Interval set to 900. This sets a timeout interval in seconds...
    Rule Medium Severity
    Show

  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must configure SSHD ClientAliveCountMax to 1.

    &lt;VulnDiscussion&gt;If SSHD is enabled, it must be configured with the Client Alive Maximum Count set to 1. This will set the number of client a...
    Rule Medium Severity
    Show

  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must set login grace time to 30.

    &lt;VulnDiscussion&gt;If SSHD is enabled, it must be configured to wait only 30 seconds before timing out login attempts. NOTE: /etc/ssh/sshd_conf...
    Rule Medium Severity
    Show

  • SRG-OS-000033-GPOS-00014

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must limit SSHD to FIPS-compliant connections.

    &lt;VulnDiscussion&gt;If SSHD is enabled, it must be configured to limit the Ciphers, HostbasedAcceptedAlgorithms, HostKeyAlgorithms, KexAlgorithms...
    Rule High Severity
    Show

  • SRG-OS-000033-GPOS-00014

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must limit SSH to FIPS-compliant connections.

    &lt;VulnDiscussion&gt;SSH must be configured to limit the Ciphers, HostbasedAcceptedAlgorithms, HostKeyAlgorithms, KexAlgorithms, MACs, PubkeyAccep...
    Rule High Severity
    Show

  • The macOS system must set account lockout time to 15 minutes.

    &lt;VulnDiscussion&gt;The macOS system must be configured to enforce a lockout time period of at least 15 minutes when the maximum number of failed...
    Rule Medium Severity
    Show

  • SRG-OS-000029-GPOS-00010

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must enforce screen saver timeout.

    &lt;VulnDiscussion&gt;The screen saver timeout must be set to 900 seconds or a shorter length of time. This rule ensures that a full session lock ...
    Rule Medium Severity
    Show

  • SRG-OS-000104-GPOS-00051

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must disable login to other users' active and locked sessions.

    &lt;VulnDiscussion&gt;The ability to log in to another user's active or locked session must be disabled. macOS has a privilege that can be granted...
    Rule Medium Severity
    Show

  • SRG-OS-000104-GPOS-00051

    <GroupDescription></GroupDescription>
    Group
    Show

  • The macOS system must disable root login.

    &lt;VulnDiscussion&gt;To assure individual accountability and prevent unauthorized access, logging in as root at the login window must be disabled....
    Rule Medium Severity
    Show

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