From Adobe Acrobat Professional DC Classic Security Technical Implementation Guide
Part of SRG-APP-000380
Associated with: CCI-001813
Certified document trust elevates signed PDF files to a privileged location and bypasses privileged view security protections. Disabling certified documents disables and locks the end user's ability to elevate certified documents as a privileged location.
Verify the following registry configuration: Using the Registry Editor, navigate to the following: HKEY_LOCAL_MACHINE\Software\Policies\Adobe\Adobe Acrobat\2015\FeatureLockDown Value Name: bEnableCertificateBasedTrust Type: REG_DWORD Value: 0 If the value for bEnableCertificateBasedTrust is not set to "0" and Type is not configured to REG_DWORD or does not exist, this is a finding. GUI path: Edit > Preferences > Security (Enhanced) > In the 'Privileged Location' section, verify 'Automatically trust documents with valid certification' option is unchecked and greyed out (locked). If this box is checked and not greyed out, this is a finding. Admin Template path: Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Classic > Preferences > Security (Enhanced) > 'Automatically trust documents with valid certification' must be set to 'Disabled'. This policy setting requires the installation of the AcrobatProDCClassic custom templates included with the STIG package. "AcrobatProDCClassic.admx" and "AcrobatProDCClassic.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.
Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\2015\FeatureLockDown Value Name: bEnableCertificateBasedTrust Type: REG_DWORD Value: 0 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Classic > Preferences > Security (Enhanced) > 'Automatically trust documents with valid certification' to 'Disabled'. This policy setting requires the installation of the AcrobatProDCClassic custom templates included with the STIG package. "AcrobatProDCClassic.admx" and "AcrobatProDCClassic.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.
Lavender hyperlinks in small type off to the right (of CSS
class id, if you view the page source) point to
globally unique URIs for each document and item. Copy the
link location and paste anywhere you need to talk
unambiguously about these things.
You can obtain data about documents and items in other
formats. Simply provide an HTTP header Accept:
text/turtle or
Accept: application/rdf+xml.
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