Adobe Acrobat Pro DC Continuous must be configured to block Flash Content.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-213122 | SRG-APP-000141 | AADC-CN-000290 | SV-213122r766526_rule | 2021-06-22 | 2 |
Description
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.
ℹ️ Check
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'.
✔️ Fix
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'.