Adobe Reader DC must disable the ability to change the Default Handler.
An XCCDF Rule
Description
<VulnDiscussion>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.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-213176r395850_rule
- Severity
- Low
- References
- Updated
Remediation - Manual Procedure
Configure the following registry value:
Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \Software\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown
Value Name: bDisablePDFHandlerSwitching