Adobe Acrobat Pro DC Periodic downloading of Adobe certificates must be disabled.

From Adobe Acrobat Pro DC Security Technical Implementation Guide

Part of SRG-APP-000427

Associated with: CCI-002470

SV-94107r1_rule Adobe Acrobat Pro DC Periodic downloading of Adobe certificates must be disabled.

Vulnerability discussion

By default, the user can update Adobe certificates from an Adobe server through the GUI. When updating Adobe certificates is disabled, it prevents the automatic download and installation of certificates and disables and locks the end user's ability to download those certificates.

Check content

Verify the following registry configuration: Using the Registry Editor, navigate to the following: HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat\DC\Security\cDigSig\cAdobeDownload Value Name: bLoadSettingsFromURL Type: REG_DWORD Value: 0 If the value for bLoadSettingsFromURL 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 > Trust Manager > In the 'Automatic Adobe Approved Trust List (AATL) Updates' section > verify the 'Load trusted certificates from an Adobe AATL server' is not checked. If the box is checked, this is a finding. Admin Template path: User Configuration > Administrative Templates > Adobe Acrobat Pro DC > Preferences > Trust Manager > 'Load trusted certificates from an Adobe AATL server' must be set to 'Disabled'. This policy setting requires the installation of the AcrobatProDC custom templates included with the STIG package. "AcrobatProDC.admx" and "AcrobatProDC.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Fix text

Configure the following registry value: Registry Hive: HKEY_CURRENT_USER Registry Path: \Software\Adobe\Adobe Acrobat\DC\Security\cDigSig\cAdobeDownload Value Name: bLoadSettingsFromURL Type: REG_DWORD Value: 0 Configure the policy value for User Configuration > Administrative Templates > Adobe Acrobat Pro DC > Preferences > Trust Manager > 'Load trusted certificates from an Adobe AATL server' to 'Disabled'. This policy setting requires the installation of the AcrobatProDC custom templates included with the STIG package. "AcrobatProDC.admx" and "AcrobatProDC.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Pro Tips

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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