Adobe Reader DC must block Flash Content.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-64933	ARDC-CN-000045	SV-79423r2_rule		Medium

Description
Flash content is commonly hosted on a web page, but it can also be embedded in PDF and other documents. Flash could be used to surreptitious install malware on the end-users computer. Flash Content restricts Adobe Reader DC not to play Flash content within a PDF. Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

STIG	Date
Adobe Acrobat Reader DC Continuous Track Security Technical Implementation Guide	2018-06-12

Details

Check Text ( C-65591r3_chk )
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: bEnableFlash Type: REG_DWORD Value: 0 If the value for bEnableFlash is not set to “0” and Type configured to REG_DWORD or does not exist, then this is a finding. Admin Template path: Computer Configuration > Administrative Templates > Adobe Reader DC Continuous > Preferences > 'Enable Flash' must be set to 'Disabled'. This policy setting requires the installation of the AcrobatDCContinuous custom templates included with the STIG package. "AcrobatDCContinuous.admx" and "AcrobatDCContinuous.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Check Text ( C-65591r3_chk )

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: bEnableFlash
Type: REG_DWORD
Value: 0

If the value for bEnableFlash is not set to “0” and Type configured to REG_DWORD or does not exist, then this is a finding.

Admin Template path: Computer Configuration > Administrative Templates > Adobe Reader DC Continuous > Preferences > 'Enable Flash' must be set to 'Disabled'.

This policy setting requires the installation of the AcrobatDCContinuous custom templates included with the STIG package. "AcrobatDCContinuous.admx" and "AcrobatDCContinuous.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Fix Text (F-70873r3_fix)
Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown Value Name: bEnableFlash Type: REG_DWORD Value: 0 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Reader DC Continuous > Preferences > 'Enable Flash' to 'Disabled'. This policy setting requires the installation of the AcrobatDCContinuous custom templates included with the STIG package. "AcrobatDCContinuous.admx" and "AcrobatDCContinuous.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Fix Text (F-70873r3_fix)

Configure the following registry value:

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

Value Name: bEnableFlash
Type: REG_DWORD
Value: 0

Configure the policy value for Computer Configuration > Administrative Templates > Adobe Reader DC Continuous > Preferences > 'Enable Flash' to 'Disabled'.

This policy setting requires the installation of the AcrobatDCContinuous custom templates included with the STIG package. "AcrobatDCContinuous.admx" and "AcrobatDCContinuous.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.