Rule version AADC-CN-000290 · STIG v2 · 2021-06-22
Flash has a long history of vulnerabilities. Although Flash is no longer provided with Acrobat, if the system has Flash installed, a malicious PDF could execute code on the system. Configuring Flash to run from a privileged location limits the execution capability of untrusted Flash content that may be embedded in the PDF.
Verify the following registry configuration:
Using the Registry Editor, navigate to the following: HKEY_LOCAL_MACHINE\Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown
Value Name: bEnableFlash Type: REG_DWORD Value: 0
If the value for bEnableFlash is not set to “0” and Type is not configured to REG_DWORD or does not exist, this is a finding.
Admin Template path: Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > 'Enable Flash' must be set to 'Disabled'.
Configure the following registry value:
Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown
Value Name: bEnableFlash Type: REG_DWORD Value: 0
Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > 'Enable Flash' to 'Disabled'.