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III - Administrative Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • All TOSS 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 user's home directory is not the same as the primary GID of the user, th...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • All TOSS local interactive users must have a home directory assigned in the /etc/passwd file.

    &lt;VulnDiscussion&gt;If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files th...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • The x86 Ctrl-Alt-Delete key sequence in TOSS must be disabled if a graphical user interface is installed.

    &lt;VulnDiscussion&gt;A locally logged-on user, who presses Ctrl-Alt-Delete when at the console, can reboot the system. If accidentally pressed, as...
    Rule High Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • TOSS must disable the user list at logon for graphical user interfaces.

    &lt;VulnDiscussion&gt;Leaving the user list enabled is a security risk since it allows anyone with physical access to the system to enumerate known...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • TOSS must display the date and time of the last successful account logon upon an SSH logon.

    &lt;VulnDiscussion&gt;Providing users with feedback on when account accesses via SSH last occurred facilitates user recognition and reporting of un...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • TOSS must not allow accounts configured with blank or null passwords.

    &lt;VulnDiscussion&gt;If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with ...
    Rule High Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • TOSS must not have unnecessary accounts.

    &lt;VulnDiscussion&gt;Accounts providing no operational purpose provide additional opportunities for system compromise. Unnecessary accounts includ...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00228

    <GroupDescription></GroupDescription>
    Group
  • TOSS 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
  • SRG-OS-000480-GPOS-00230

    <GroupDescription></GroupDescription>
    Group
  • All TOSS local interactive user home directories must have mode 0770 or less permissive.

    &lt;VulnDiscussion&gt;Users' home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sha...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00230

    <GroupDescription></GroupDescription>
    Group
  • All TOSS local interactive user home directories must be owned by root.

    &lt;VulnDiscussion&gt;Users' home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sha...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00230

    <GroupDescription></GroupDescription>
    Group
  • All TOSS local interactive user home directories must be owned by the user's primary group.

    &lt;VulnDiscussion&gt;Users' home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sha...
    Rule Medium Severity
  • SRG-OS-000004-GPOS-00004

    <GroupDescription></GroupDescription>
    Group
  • TOSS must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.

    &lt;VulnDiscussion&gt;Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...
    Rule Medium Severity
  • SRG-OS-000037-GPOS-00015

    <GroupDescription></GroupDescription>
    Group
  • TOSS audit records must contain information to establish what type of events occurred, when the events occurred, the source of events, where events occurred, and the outcome of events.

    &lt;VulnDiscussion&gt;Without establishing what type of events occurred, when events occurred, the source of events, where events occurred, and the...
    Rule Medium Severity
  • SRG-OS-000042-GPOS-00020

    <GroupDescription></GroupDescription>
    Group
  • TOSS must generate audit records containing the full-text recording of privileged commands.

    &lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information. At...
    Rule Medium Severity
  • SRG-OS-000046-GPOS-00022

    <GroupDescription></GroupDescription>
    Group
  • TOSS must alert the ISSO and SA (at a minimum) in the event of an audit processing failure.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....
    Rule Medium Severity
  • SRG-OS-000047-GPOS-00023

    <GroupDescription></GroupDescription>
    Group
  • TOSS must take appropriate action when an audit processing failure occurs.

    &lt;VulnDiscussion&gt;It is critical that when the operating system is at risk of failing to process audit logs as required, it takes action to mit...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • TOSS audit logs must have a mode of 0600 or less permissive to prevent unauthorized read access.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • TOSS audit log directory must have a mode of 0700 or less permissive to prevent unauthorized read access.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • TOSS audit logs must be owned by user root to prevent unauthorized read access.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • TOSS audit logs must be owned by group root to prevent unauthorized read access.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • TOSS audit log directory must be owned by user root to prevent unauthorized read access.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • TOSS audit log directory must be owned by group root to prevent unauthorized read access.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • The TOSS audit system must protect auditing rules from unauthorized change.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000057-GPOS-00027

    <GroupDescription></GroupDescription>
    Group
  • The TOSS audit system must protect logon UIDs from unauthorized change.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
  • SRG-OS-000037-GPOS-00015

    <GroupDescription></GroupDescription>
    Group
  • Successful/unsuccessful uses of the "chage" command in TOSS must generate an audit record.

    &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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