Adobe Reader DC must disable the ability to change the Default Handler.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-213176 | ARDC-CN-000050 | SV-213176r395850_rule | CCI-001499 | low |
| Description | ||||
| Allowing user to make changes to an application case cause a security risk. When the Default PDF Handler is disabled, the end users will not be able to change the default PDF viewer. | ||||
| STIG | Date | |||
| Adobe Acrobat Reader DC Continuous Track Security Technical Implementation Guide | 2021-06-22 | |||
Details
Check Text (C-213176r395850_chk)
Verify the following registry configuration:
Utilizing the Registry Editor, navigate to the following: HKEY_LOCAL_MACHINE\Software\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown
Value Name: bDisablePDFHandlerSwitching
Type: REG_DWORD
Value: 1
If the value for bDisablePDFHandlerSwitching is not set to “1” and Type configured to REG_DWORD or does not exist, then this is a finding.
Fix Text (F-14409r276747_fix)
Configure the following registry value:
Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \Software\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown
Value Name: bDisablePDFHandlerSwitching
Type: REG_DWORD
Value: 1