STIGQter STIGQter: STIG Summary: SLES 12 Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 24 Jan 2020: The SUSE operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting access via SFTP/FTP.

DISA Rule

SV-92127r4_rule

Vulnerability Number

V-77431

Group Title

SRG-OS-000023-GPOS-00006

Rule Version

SLES-12-030010

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure the SUSE operating system to display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system via VSFTP by running the following commands:

Edit the "vsftpd.conf" file:

# sudo sed -i 's/^.*\bbanner_file\b.*$/banner_file=\/etc\/issue/' /etc/vsftpd.conf

Restart the vsftp daemon:

# sudo systemctl restart vsftpd.service

If "/etc/issue" does not contain the Standard Mandatory DoD banner, add the following text to "/etc/issue":

"You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.

By using this IS (which includes any device attached to this IS), you consent to the following conditions:

-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.

-At any time, the USG may inspect and seize data stored on this IS.

-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.

-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.

-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."

Check Contents

Verify the SUSE operating system displays the Standard Mandatory DoD Notice and Consent Banner before granting access to the system via VSFTP.

Check the issue file to verify that it contains one of the DoD-required banners. If it does not, this is a finding.

# more /etc/issue

The output must display the following DoD-required banner text.

"You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.

By using this IS (which includes any device attached to this IS), you consent to the following conditions:

-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.

-At any time, the USG may inspect and seize data stored on this IS.

-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.

-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.

-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."

If the output does not display the banner text, this is a finding.

Check the banner setting in vsftpd.conf:

# sudo grep "banner_file" /etc/vsftpd.conf

The output must show the value of "banner_file" set to "/etc/issue". An example is shown below:

# sudo grep Banner" /etc/vsftpd.conf
banner_file=/etc/issue

If the output does not show the value of "banner_file" set to "/etc/issue", this is a finding.

Vulnerability Number

V-77431

Documentable

False

Rule Version

SLES-12-030010

Severity Override Guidance

Verify the SUSE operating system displays the Standard Mandatory DoD Notice and Consent Banner before granting access to the system via VSFTP.

Check the issue file to verify that it contains one of the DoD-required banners. If it does not, this is a finding.

# more /etc/issue

The output must display the following DoD-required banner text.

"You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.

By using this IS (which includes any device attached to this IS), you consent to the following conditions:

-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.

-At any time, the USG may inspect and seize data stored on this IS.

-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.

-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.

-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."

If the output does not display the banner text, this is a finding.

Check the banner setting in vsftpd.conf:

# sudo grep "banner_file" /etc/vsftpd.conf

The output must show the value of "banner_file" set to "/etc/issue". An example is shown below:

# sudo grep Banner" /etc/vsftpd.conf
banner_file=/etc/issue

If the output does not show the value of "banner_file" set to "/etc/issue", this is a finding.

Check Content Reference

M

Target Key

2903

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