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II - Mission Support Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • All RHEL 9 local interactive user home directories defined in the /etc/passwd file must exist.

    &lt;VulnDiscussion&gt;If a local interactive user has a home directory defined that does not exist, the user may be given access to the / directory...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • All RHEL 9 local interactive user home directories must be group-owned by the home directory owner's primary group.

    &lt;VulnDiscussion&gt;If the Group Identifier (GID) of a local interactive users home directory is not the same as the primary GID of the user, thi...
    Rule Medium Severity
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  • SRG-OS-000329-GPOS-00128

    <GroupDescription></GroupDescription>
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  • RHEL 9 must automatically lock an account when three unsuccessful logon attempts occur.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Medium Severity
    Show

  • SRG-OS-000329-GPOS-00128

    <GroupDescription></GroupDescription>
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  • RHEL 9 must automatically lock the root account until the root account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, also know...
    Rule Medium Severity
    Show

  • SRG-OS-000329-GPOS-00128

    <GroupDescription></GroupDescription>
    Group
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  • RHEL 9 must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts the risk of unauthorized system access via user password guessing, otherwise ...
    Rule Medium Severity
    Show

  • SRG-OS-000329-GPOS-00128

    <GroupDescription></GroupDescription>
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  • RHEL 9 must maintain an account lock until the locked account is released by an administrator.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts the risk of unauthorized system access via user password guessing, otherwise ...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • RHEL 9 must not have unauthorized accounts.

    &lt;VulnDiscussion&gt;Accounts providing no operational purpose provide additional opportunities for system compromise. Unnecessary accounts includ...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • The root account must be the only account having unrestricted access to RHEL 9 system.

    &lt;VulnDiscussion&gt;An account has root authority if it has a user identifier (UID) of "0". Multiple accounts with a UID of "0" afford more oppor...
    Rule High Severity
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  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
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  • RHEL 9 must ensure account lockouts persist.

    &lt;VulnDiscussion&gt;Having lockouts persist across reboots ensures that account is only unlocked by an administrator. If the lockouts did not per...
    Rule Medium Severity
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  • SRG-OS-000104-GPOS-00051

    <GroupDescription></GroupDescription>
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  • RHEL 9 groups must have unique Group ID (GID).

    &lt;VulnDiscussion&gt;To ensure accountability and prevent unauthenticated access, groups must be identified uniquely to prevent potential misuse a...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Local RHEL 9 initialization files must not execute world-writable programs.

    &lt;VulnDiscussion&gt;If user start-up files execute world-writable programs, especially in unprotected directories, they could be maliciously modi...
    Rule Medium Severity
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  • SRG-OS-000030-GPOS-00011

    <GroupDescription></GroupDescription>
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  • RHEL 9 must have the tmux package installed.

    &lt;VulnDiscussion&gt;Tmux is a terminal multiplexer that enables a number of terminals to be created, accessed, and controlled from a single scree...
    Rule Medium Severity
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  • SRG-OS-000031-GPOS-00012

    <GroupDescription></GroupDescription>
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  • RHEL 9 must ensure session control is automatically started at shell initialization.

    &lt;VulnDiscussion&gt;Tmux is a terminal multiplexer that enables a number of terminals to be created, accessed, and controlled from a single scree...
    Rule Medium Severity
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  • SRG-OS-000028-GPOS-00009

    <GroupDescription></GroupDescription>
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  • RHEL 9 must enable a user session lock until that user re-establishes access using established identification and authentication procedures for command line sessions.

    &lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the ...
    Rule Medium Severity
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  • SRG-OS-000029-GPOS-00010

    <GroupDescription></GroupDescription>
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  • RHEL 9 must automatically lock command line user sessions after 15 minutes of inactivity.

    &lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...
    Rule Medium Severity
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  • SRG-OS-000324-GPOS-00125

    <GroupDescription></GroupDescription>
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  • RHEL 9 must prevent users from disabling session control mechanisms.

    &lt;VulnDiscussion&gt;The session lock is implemented at the point where session activity can be determined. Rather than be forced to wait for a pe...
    Rule Low Severity
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  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
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  • RHEL 9 must automatically exit interactive command shell user sessions after 15 minutes of inactivity.

    &lt;VulnDiscussion&gt;Terminating an idle interactive command shell user session within a short time period reduces the window of opportunity for u...
    Rule Medium Severity
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  • SRG-OS-000027-GPOS-00008

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  • RHEL 9 must limit the number of concurrent sessions to ten for all accounts and/or account types.

    &lt;VulnDiscussion&gt;Operating system management includes the ability to control the number of users and user sessions that utilize an operating s...
    Rule Low Severity
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  • SRG-OS-000021-GPOS-00005

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  • RHEL 9 must log username information when unsuccessful logon attempts occur.

    &lt;VulnDiscussion&gt;Without auditing of these events, it may be harder or impossible to identify what an attacker did after an attack.&lt;/VulnDi...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00226

    <GroupDescription></GroupDescription>
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  • RHEL 9 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

    &lt;VulnDiscussion&gt;Increasing the time between a failed authentication attempt and reprompting to enter credentials helps to slow a single-threa...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00228

    <GroupDescription></GroupDescription>
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  • RHEL 9 must define default permissions for the bash shell.

    &lt;VulnDiscussion&gt;The umask controls the default access mode assigned to newly created files. A umask of 077 limits new files to mode 600 or le...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00228

    <GroupDescription></GroupDescription>
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  • RHEL 9 must define default permissions for the c shell.

    &lt;VulnDiscussion&gt;The umask controls the default access mode assigned to newly created files. A umask of 077 limits new files to mode 600 or le...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00228

    <GroupDescription></GroupDescription>
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  • RHEL 9 must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

    &lt;VulnDiscussion&gt;Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary acc...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00228

    <GroupDescription></GroupDescription>
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  • RHEL 9 must define default permissions for the system default profile.

    &lt;VulnDiscussion&gt;The umask controls the default access mode assigned to newly created files. A umask of 077 limits new files to mode 600 or le...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • RHEL 9 must display the date and time of the last successful account logon upon logon.

    &lt;VulnDiscussion&gt;Users need to be aware of activity that occurs regarding their account. Providing users with information regarding the number...
    Rule Low Severity
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Node 2

siemur/test-space

The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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