Adobe Reader DC must enable Enhanced Security in a Standalone Application.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-213168	SRG-APP-000112	ARDC-CN-000005	SV-213168r395811_rule	2021-06-22	2

Description
PDFs have evolved from static pages to complex documents with features such as interactive forms, multimedia content, scripting, and other capabilities. These features leave PDFs vulnerable to malicious scripts or actions that can damage the computer or steal data. The Enhanced security feature protects the computer against these threats by blocking or selectively permitting actions for trusted locations and files. Enhanced Security determines if a PDF is viewed within a standalone application. A threat to users of Adobe Reader DC is opening a PDF file that contains malicious executable content. Enhanced Security “hardens” the application against risky actions: prevents cross domain access, prohibits script and data injection, blocks stream access to XObjects, silent printing, and execution of high privilege JavaScript. Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

Description

PDFs have evolved from static pages to complex documents with features such as interactive forms, multimedia content, scripting, and other capabilities. These features leave PDFs vulnerable to malicious scripts or actions that can damage the computer or steal data. The Enhanced security feature protects the computer against these threats by blocking or selectively permitting actions for trusted locations and files. Enhanced Security determines if a PDF is viewed within a standalone application. A threat to users of Adobe Reader DC is opening a PDF file that contains malicious executable content. Enhanced Security “hardens” the application against risky actions: prevents cross domain access, prohibits script and data injection, blocks stream access to XObjects, silent printing, and execution of high privilege JavaScript. Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

ℹ️ Check
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: bEnhancedSecurityStandalone Type: REG_DWORD Value: 1 If the value for bEnhancedSecurityStandalone is not set to “1” and Type configured to REG_DWORD or does not exist, then this is a finding.

✔️ Fix
Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown Value Name: bEnhancedSecurityStandalone Type: REG_DWORD Value: 1