Adobe Acrobat Reader DC Classic Track V2R1 (SCAP)

b

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

RMF Control: SC-18
Severity: M
CCI: CCI-001166
Version: ARDC-CL-000005
Vuln IDs: V-213141
Rule IDs: SV-213141r557349_rule

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

Fix: F-14375r276567_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bEnhancedSecurityStandalone Type: REG_DWORD Value: 1

b

Adobe Reader DC must enable Enhanced Security in a Browser.

RMF Control: SC-18
Severity: M
CCI: CCI-001170
Version: ARDC-CL-000010
Vuln IDs: V-213142
Rule IDs: SV-213142r557349_rule

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 browser 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

Fix: F-14376r276570_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bEnhancedSecurityInBrowser Type: REG_DWORD Value: 1

b

Adobe Reader DC must enable Protected Mode.

RMF Control: SC-18
Severity: M
CCI: CCI-001166
Version: ARDC-CL-000015
Vuln IDs: V-213143
Rule IDs: SV-213143r557349_rule

A threat to users of Adobe Reader DC is opening a PDF file that contains malicious executable content. Protected mode provides a sandbox capability that prevents malicious PDF files from launching arbitrary executable files, writing to system directories or the Windows registry. This isolation of the PDFs reduces the risk of security breaches in areas outside the sandbox. Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

Fix: F-14377r276573_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bProtectedMode Type: REG_DWORD Value: 1

b

Adobe Reader DC must enable Protected View.

RMF Control: SC-18
Severity: M
CCI: CCI-001170
Version: ARDC-CL-000020
Vuln IDs: V-213144
Rule IDs: SV-213144r557349_rule

A threat to users of Adobe Reader DC is opening a PDF file that contains malicious executable content. Protected view restricts Adobe Reader DC functionality, within a sandbox, when a PDF is opened from an untrusted source. This isolation of the PDFs reduces the risk of security breaches in areas outside the sandbox. Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

Fix: F-14378r276576_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: iProtectedView Type: REG_DWORD Value: 2

b

Adobe Reader DC must Block Websites.

RMF Control: SC-18
Severity: M
CCI: CCI-001166
Version: ARDC-CL-000025
Vuln IDs: V-213145
Rule IDs: SV-213145r557349_rule

Clicking any link to the Internet poses a potential security risk. Malicious websites can transfer harmful content or silently gather data. Acrobat Reader documents can connect to websites which can pose a potential threat to DoD systems and that functionality must be blocked. However, PDF document workflows that are trusted (e.g., DoD-created) can benefit from leveraging legitimate website access with minimal risk. Therefore, the ISSO may approve of website access and accept the risk if the access provides benefit and is a trusted site or the risk associated with accessing the site has been mitigated. Adobe Reader must block access to all websites that are not specifically allowed by ISSO risk acceptance. Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

Fix: F-14379r276579_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cDefaultLaunchURLPerms Value Name: iURLPerms Type: REG_DWORD Value: 1 If configuring the system to allow access to websites, obtain documented ISSO approvals and risk acceptance and set “iURLPerms” to “0”.

b

Adobe Reader DC must block access to Unknown Websites.

RMF Control: SC-18
Severity: M
CCI: CCI-001170
Version: ARDC-CL-000030
Vuln IDs: V-213146
Rule IDs: SV-213146r557349_rule

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

Fix: F-14380r276582_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cDefaultLaunchURLPerms Value Name: iUnknownURLPerms Type: REG_DWORD Value: 3

b

Adobe Reader DC must prevent opening files other than PDF or FDF.

RMF Control: SC-18
Severity: M
CCI: CCI-001166
Version: ARDC-CL-000035
Vuln IDs: V-213147
Rule IDs: SV-213147r557349_rule

Attachments represent a potential security risk because they can contain malicious content, open other dangerous files, or launch applications. Certainly file types such as .bin, .exe, .bat, and so on will be recognized as threats. This feature prevents users from opening or launching file types other than PDF or FDF and disables the menu option. Satisfies: SRG-APP-000112, SRG-APP-000206, SRG-APP-000207, SRG-APP-000209, SRG-APP-000210

Fix: F-14381r276585_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: iFileAttachmentPerms Type: REG_DWORD Value: 1

b

Adobe Reader DC must block Flash Content.

RMF Control: SC-18
Severity: M
CCI: CCI-001166
Version: ARDC-CL-000045
Vuln IDs: V-213148
Rule IDs: SV-213148r557349_rule

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

Fix: F-14382r276588_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bEnableFlash Type: REG_DWORD Value: 0

a

Adobe Reader DC must disable the ability to change the Default Handler.

RMF Control: CM-5
Severity: L
CCI: CCI-001499
Version: ARDC-CL-000050
Vuln IDs: V-213149
Rule IDs: SV-213149r557349_rule

Allowing user to make changes to an application case cause a security risk. When the Default PDF Handler is disabled, the end users will not be able to change the default PDF viewer.

Fix: F-14383r276591_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bDisablePDFHandlerSwitching Type: REG_DWORD Value: 1

a

Adobe Reader DC must disable the Adobe Send and Track plugin for Outlook.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: ARDC-CL-000055
Vuln IDs: V-213150
Rule IDs: SV-213150r557349_rule

When enabled, Adobe Send and Track button appears in Outlook. When an email is composed it enables the ability to send large files as public links through Outlook. The attached files can be uploaded to the Adobe Document Cloud and public links to the files are inserted in the email body.

Fix: F-14384r276594_fix

Configure the following registry value: Note: The Key Name "cCloud" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cCloud Value Name: bAdobeSendPluginToggle Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Reader DC Classic > Preferences > 'Send and Track plugin' to 'Disabled'. This policy setting requires the installation of the AcrobatDCClassic custom templates included with the STIG package. "AcrobatDCClassic.admx" and "AcrobatDCClassic.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

b

Adobe Reader DC must disable all service access to Document Cloud Services.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: ARDC-CL-000060
Vuln IDs: V-213151
Rule IDs: SV-213151r557349_rule

By default, Adobe online services are tightly integrated in Adobe Reader DC. With the integration of Adobe Document Cloud, disabling this feature prevents the risk of additional attack vectors. Within Adobe Reader DC, the Adobe Cloud resources require a paid subscription for each service.

Fix: F-14385r276597_fix

Configure the following registry value: Note: The Key Name "cServices" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cServices Value Name: bToggleAdobeDocumentServices Type: REG_DWORD Value: 1

b

Adobe Reader DC must disable Cloud Synchronization.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: ARDC-CL-000065
Vuln IDs: V-213152
Rule IDs: SV-213152r557349_rule

By default, Adobe online services are tightly integrated in Adobe Reader DC. When the Adobe Cloud synchronization is disabled it prevents the synchronization of desktop preferences across devices on which the user is signed in with an Adobe ID (including phones).

Fix: F-14386r276600_fix

Configure the following registry value: Note: The Key Name "cServices" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cServices Value Name: bTogglePrefsSync Type: REG_DWORD Value: 1

a

Adobe Reader DC must disable the Adobe Repair Installation.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: ARDC-CL-000070
Vuln IDs: V-213153
Rule IDs: SV-213153r557349_rule

When Repair Installation is disabled the user does not have the option (Help Menu) or functional to repair an Adobe Reader DC install.

Fix: F-14387r276603_fix

Configure the following registry value: For 32 bit: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Adobe\Acrobat Reader\2015\Installer For 64 bit: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Wow6432Node\Adobe\Acrobat Reader\2015\Installer Value Name: DisableMaintenance Type: REG_DWORD Value: 1

b

Adobe Reader DC must disable 3rd Party Web Connectors.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: ARDC-CL-000075
Vuln IDs: V-213154
Rule IDs: SV-213154r557349_rule

When 3rd Party Web Connectors are disabled it prevents the configuration of Adobe Reader DC access to third party services for file storage.

Fix: F-14388r276606_fix

Configure the following registry value: Note: The Key Name "cServices" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cServices Value Name: bToggleWebConnectors Type: REG_DWORD Value: 1

a

Adobe Reader DC must disable Acrobat Upsell.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: ARDC-CL-000080
Vuln IDs: V-213155
Rule IDs: SV-213155r557349_rule

Products that don’t provide the full set of features by default provide the user the opportunity to upgrade. Acrobat Upsell displays message which encourage the user to upgrade the product. For example, Reader users can purchase additional tools and features, and Acrobat Reader users can upgrade to Acrobat Professional.

Fix: F-14389r276609_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bAcroSuppressUpsell Type: REG_DWORD Value: 1

a

Adobe Reader DC must disable Adobe Send for Signature.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: ARDC-CL-000085
Vuln IDs: V-213156
Rule IDs: SV-213156r557349_rule

The Adobe Document Cloud sign service allows users to send documents online for signature and sign from anywhere or any device. The signed documents are stored in the Adobe Cloud. The Adobe Document Cloud sign service is a paid subscription. When Adobe Send for Signature is disabled users will not be allowed to utilize the Adobe Document Cloud sign function.

Fix: F-14390r276612_fix

Configure the following registry value: Note: The Key Name "cServices" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cServices Value Name: bToggleAdobeSign Type: REG_DWORD Value: 1

b

Adobe Reader DC must disable access to Webmail.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: ARDC-CL-000090
Vuln IDs: V-213157
Rule IDs: SV-213157r557349_rule

When Webmail is disabled the user cannot configure a webmail account to send an open PDF document as an attachment. Users should have the ability to send documents as Microsoft Outlook attachments. The difference is that Outlook must be configured by the administrator on the local machine.

Fix: F-14391r276615_fix

Configure the following registry value: Note: The Key Name "cWebmailProfiles" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cWebmailProfiles Value Name: bDisableWebmail Type: REG_DWORD Value: 1

b

Adobe Reader DC must disable Online SharePoint Access.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: ARDC-CL-000100
Vuln IDs: V-213158
Rule IDs: SV-213158r557349_rule

Disabling SharePoint disables or removes the user’s ability to add a SharePoint account access controls the application's ability to detect that a file came from a SharePoint server, and disables the check-out prompt.

Fix: F-14392r276618_fix

Configure the following registry value: Note: The Key Name "cSharePoint" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cSharePoint Value Name: bDisableSharePointFeatures Type: REG_DWORD Value: 1

a

Adobe Reader DC must disable the Adobe Welcome Screen.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: ARDC-CL-000115
Vuln IDs: V-213159
Rule IDs: SV-213159r557349_rule

The Adobe Reader DC Welcome screen can be distracting and also has online links to the Adobe quick tips website, tutorials, blogs and community forums. When the Adobe Reader DC Welcome screen is disabled the Welcome screen will not be populated on application startup.

Fix: F-14393r276621_fix

Configure the following registry value: Note: The Key Name "cWelcomeScreen" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cWelcomeScreen Value Name: bShowWelcomeScreen Type: REG_DWORD Value: 0

a

Adobe Reader DC must disable Service Upgrades.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: ARDC-CL-000120
Vuln IDs: V-213160
Rule IDs: SV-213160r557349_rule

By default, Adobe online services are tightly integrated into Adobe Reader DC. Disabling Service Upgrades disables both updates to the product's web-plugin components as well as all services without exception, including any online sign-in screen.

Fix: F-14394r276624_fix

Configure the following registry value: Note: The Key Name "cServices" is not created by default in the Adobe Reader DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cServices Value Name: bUpdater Type: REG_DWORD Value: 0

b

Adobe Reader DC must disable the ability to add Trusted Files and Folders.

RMF Control: CM-5
Severity: M
CCI: CCI-001813
Version: ARDC-CL-000315
Vuln IDs: V-213161
Rule IDs: SV-213161r557349_rule

Privileged Locations allow the user to selectively trust files, folders, and hosts to bypass some security restrictions, such as enhanced security and protected view. By default, the user can create privileged locations through the GUI. Disabling Trusted Files and Folders disables and locks the end user's ability to add folders and files as a privileged location prevents them from assigning trust and thereby exempting that location from enhanced security restrictions.

Fix: F-14395r276627_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bDisableTrustedFolders Type: REG_DWORD Value: 1

b

Adobe Reader DC must disable the ability to specify Host-Based Privileged Locations.

RMF Control: CM-5
Severity: M
CCI: CCI-001813
Version: ARDC-CL-000320
Vuln IDs: V-213162
Rule IDs: SV-213162r557349_rule

Privileged Locations allow the user to selectively trust files, folders, and hosts to bypass some security restrictions, such as enhanced security and protected view. By default, the user can create privileged locations through the GUI. Disabling Host-Based Privileged Locations disables and locks the end user's ability to add hosts as a privileged location prevents them from assigning trust and thereby exempting that location from enhanced security restrictions.

Fix: F-14396r276630_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown Value Name: bDisableTrustedSites Type: REG_DWORD Value: 1