STIGQter: STIG Summary: SUSE Linux Enterprise Server 15 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 23 Apr 2021:

The SUSE operating system must display the approved Standard Mandatory DoD Notice before granting local or remote access to the system via a graphical user logon.

DISA Rule

SV-234809r622137_rule

Vulnerability Number

V-234809

Group Title

SRG-OS-000228-GPOS-00088

Rule Version

SLES-15-010090

Severity

CAT II

CCI(s)

• CCI-001384 - The information system, for publicly accessible systems, displays system use information organization-defined conditions before granting further access.
• CCI-001385 - The information system, for publicly accessible systems, displays references, if any, to monitoring that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001386 - The information system, for publicly accessible systems, displays references, if any, to recording that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001387 - The information system, for publicly accessible systems, displays references, if any, to auditing that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001388 - The information system, for publicly accessible systems, includes a description of the authorized uses of the system.

Weight

10

Fix Recommendation

Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable.

Configure the SUSE operating system to display the approved Standard Mandatory DoD Notice before granting local or remote access to the system via a graphical user logon.

Create a database to contain the system wide graphical user logon settings (if it does not already exist) by performing the following command:

> sudo touch /etc/dconf/db/gdm.d/01-banner-message

Add the following lines to the "[org/gnome/login-screen]" section of the "dconf/db/gdm.d/01-banner-message" file:

[org/gnome/login-screen]
banner-message-text="You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.\nBy using this IS (which includes any device attached to this IS), you consent to the following conditions:\n-The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.\n-At any time, the USG may inspect and seize data stored on this IS.\n-Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose.\n-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.\n-Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."

Note: The "\n" characters are for formatting only. They will not be displayed on the GUI.

Run the following command to update the database:
> sudo dconf update

Check Contents

Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable.

Verify the SUSE operating system displays the approved Standard Mandatory DoD Notice before granting local or remote access to the system via a graphical user logon.

Check that the SUSE operating system displays the exact approved Standard Mandatory DoD Notice and Consent Banner text by performing the following command:

> grep banner-message-text /etc/dconf/db/gdm.d/*
banner-message-text=
"You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.\nBy using this IS (which includes any device attached to this IS), you consent to the following conditions:\n-The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.\n-At any time, the USG may inspect and seize data stored on this IS.\n-Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose.\n-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.\n-Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."

Note: The "\n" characters are for formatting only. They will not be displayed on the GUI.

If the banner text does not exactly match the approved Standard Mandatory DoD Notice and Consent Banner, this is a finding.

Vulnerability Number

V-234809

Documentable

False

Rule Version

SLES-15-010090

Severity Override Guidance

Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable.

Verify the SUSE operating system displays the approved Standard Mandatory DoD Notice before granting local or remote access to the system via a graphical user logon.

Check that the SUSE operating system displays the exact approved Standard Mandatory DoD Notice and Consent Banner text by performing the following command:

> grep banner-message-text /etc/dconf/db/gdm.d/*
banner-message-text=
"You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.\nBy using this IS (which includes any device attached to this IS), you consent to the following conditions:\n-The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.\n-At any time, the USG may inspect and seize data stored on this IS.\n-Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose.\n-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.\n-Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."

Note: The "\n" characters are for formatting only. They will not be displayed on the GUI.

If the banner text does not exactly match the approved Standard Mandatory DoD Notice and Consent Banner, this is a finding.

Check Content Reference

M

Target Key

5274

Comments