Free DISA STIG and SRG Library | Vaulted

V-80159

Adobe Acrobat Pro DC Classic certified document trust must be disabled.

Finding ID
AADC-CL-001335
Rule ID
SV-94863r1_rule
Severity
Cat II
CCE
(None)
Group Title
SRG-APP-000380
CCI
CCI-001813
Target Key
(None)
Documentable
No
Discussion

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.

Fix Text

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.

Check Content

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.