Adobe Reader DC must disable the ability to add Trusted Files and Folders.

From Adobe Acrobat Reader DC Classic Track Security Technical Implementation Guide

Associated with: CCI-001813

SV-80291r1_rule Adobe Reader DC must disable the ability to add Trusted Files and Folders.

Vulnerability discussion

Privileged Locations allow the user to selectively trust files, folders, and hosts to bypass some security restrictions, such as enhanced security and protected view. By default, the user can create privileged locations through the GUI.Disabling Trusted Files and Folders disables and locks the end user's ability to add folders and files as a privileged location prevents them from assigning trust and thereby exempting that location from enhanced security restrictions.

Check content

Verify the following registry configuration: Utilizing the Registry Editor, navigate to the following: HKEY_LOCAL_MACHINE\Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bDisableTrustedFolders Type: REG_DWORD Value: 1 If the value for bDisableTrustedFolders is not set to “1” and Type configured to REG_DWORD or does not exist, then this is a finding.

Fix text

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bDisableTrustedFolders Type: REG_DWORD Value: 1

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