Adobe Reader DC must block access to Unknown Websites.

Because Internet access is a potential security risk, clicking any unknown website link to the Internet poses a potential security risk.

Malicious websites can transfer harmful content or silently gather data.

Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

Verify the following registry configuration:

Utilizing the Registry Editor, navigate to the following: HKEY_LOCAL_MACHINE\Software\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown\cDefaultLaunchURLPerms

Value Name: iUnknownURLPerms Type: REG_DWORD Value: 3

If the value for iUnknownURLPerms is not set to “3” and Type configured to REG_DWORD or does not exist, then this is a finding.

Configure the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown\cDefaultLaunchURLPerms

Value Name: iUnknownURLPerms Type: REG_DWORD Value: 3