Adobe Acrobat Professional DC Continuous Track STIG SCAP Benchmark V1R0 (SCAP)

b

Adobe Acrobat Pro DC Continuous Enhanced Security for standalone mode must be enabled.

RMF Control: SC-18
Severity: M
CCI: CCI-001695
Version: AADC-CN-000205
Vuln IDs: V-213117
Rule IDs: SV-213117r766511_rule

Enhanced Security (ES) is a sandbox capability that restricts access to system resources. ES can be configured in two modes: Standalone mode is when Acrobat opens the desktop PDF client. ES Browser mode is when a PDF is opened via the browser plugin. When Enhanced Security is enabled and a PDF file tries to complete a restricted action from an untrusted location, a security warning must appear.Enhanced Security "hardens" the application against risky actions. It prevents cross domain access, prohibits script and data injection, blocks stream access to XObjects, silent printing, and execution of high privilege JavaScript.

Fix: F-14352r766510_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: bEnhancedSecurityStandalone Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Security (Enhanced) > 'Enable Enhanced Security Standalone' to 'Enabled'.

b

Adobe Acrobat Pro DC Continuous Enhanced Security for browser mode must be enabled.

RMF Control: SC-18
Severity: M
CCI: CCI-001695
Version: AADC-CN-000210
Vuln IDs: V-213118
Rule IDs: SV-213118r766514_rule

Enhanced Security (ES) is a sandbox capability that restricts access to system resources and prevents PDF cross domain access. ES can be configured in two modes: Standalone mode is when Acrobat opens the desktop PDF client. ES Browser mode is when a PDF is opened via the browser plugin. When Enhanced Security is enabled and a PDF file tries to complete a restricted action from an untrusted location, a security warning must appear.Enhanced Security "hardens" the application against risky actions. It prevents cross domain access, prohibits script and data injection, blocks stream access to XObjects, silent printing, and execution of high privilege JavaScript.

Fix: F-14353r766513_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: bEnhancedSecurityInBrowser Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Security (Enhanced) > 'Enable Enhanced Security In Browser' to 'Enabled'.

b

Adobe Acrobat Pro DC Continuous PDF file attachments must be blocked.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: AADC-CN-000275
Vuln IDs: V-213119
Rule IDs: SV-213119r766517_rule

Acrobat Pro allows for files to be attached to PDF documents. Attachments represent a potential security risk because they can contain malicious content, open other dangerous files, or launch applications.This feature prevents users from opening or launching file types other than PDF or FDF and disables the menu option to re-enable.

Fix: F-14354r766516_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: iFileAttachmentPerms Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Allow opening of non-PDF file attachments with external applications' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous access to unknown websites must be restricted.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: AADC-CN-000280
Vuln IDs: V-213120
Rule IDs: SV-213120r766520_rule

Acrobat provides the ability for the user to store a list of websites with an associated behavior of allow, ask, or block. Websites that are not in this list are unknown. PDF files can contain URLs that will initiate connections to unknown websites in order to share or get information. That access must be restricted.

Fix: F-14355r766519_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cDefaultLaunchURLPerms\ Value Name: iUnknownURLPerms Type: REG_DWORD Value: 3 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Access to unknown websites' to 'Enabled' and select 'Block access' in the drop down box.

a

Adobe Acrobat Pro DC Continuous access to websites must be blocked.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: AADC-CN-000285
Vuln IDs: V-213121
Rule IDs: SV-213121r766523_rule

PDF files can contain URLs that initiate connections to websites in order to share or get information. Any Internet access introduces a security risk as malicious websites can transfer harmful content or silently gather data.

Fix: F-14356r766522_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cDefaultLaunchURLPerms\ Value Name: iURLPerms Type: REG_DWORD Value: 1 The setting may be set to "0" if a documented risk acceptance approving the websites is approved by the ISSO/AO. Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Access to websites' to 'Enabled' and select 'Block PDF files access to all web sites' in the drop down box. Select 'Custom setting' if needed and provide a documented risk acceptance approved by the ISSO/AO approving the websites.

b

Adobe Acrobat Pro DC Continuous must be configured to block Flash Content.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: AADC-CN-000290
Vuln IDs: V-213122
Rule IDs: SV-213122r766526_rule

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.

Fix: F-14357r766525_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'.

b

The Adobe Acrobat Pro DC Continuous Send and Track plugin for Outlook must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: AADC-CN-000295
Vuln IDs: V-213123
Rule IDs: SV-213123r766529_rule

When enabled, the 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-14358r766528_fix

Configure the following registry value: Note: The Key Name "cCloud" is not created by default in the Acrobat Pro DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cCloud Value Name: bAdobeSendPluginToggle Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > 'Send and Track plugin' to 'Disabled'.

b

Adobe Acrobat Pro DC Continuous privileged file and folder locations must be disabled.

RMF Control: CM-5
Severity: M
CCI: CCI-001813
Version: AADC-CN-000840
Vuln IDs: V-213124
Rule IDs: SV-213124r766532_rule

Privileged Locations are the primary method Acrobat uses to allow users and admins to specify trusted content that should be exempt from security restrictions, such as when Enhanced Security is enabled. A Privileged Location may be a file, folder, or a host. If the user is allowed to set a Privileged Location, they could bypass security protections.

Fix: F-14359r766531_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: bDisableTrustedFolders Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Security (Enhanced) > 'Privileged folder locations' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous periodic downloading of Adobe European certificates must be disabled.

RMF Control: SC-23
Severity: L
CCI: CCI-002470
Version: AADC-CN-000990
Vuln IDs: V-213126
Rule IDs: SV-213126r766535_rule

By default, the user can update Adobe European certificates from an Adobe server through the GUI. When updating Adobe European certificates is disabled, it prevents the automatic download and installation of certificates and disables and locks the end user's ability to download those certificates.

Fix: F-14361r766534_fix

Configure the following registry value: Note: The Key Name "cEUTLDownload" is not created by default in the Acrobat Pro DC install and must be created. Registry Hive: HKEY_CURRENT_USER Registry Path: \Software\Adobe\Adobe Acrobat\DC\Security\cDigSig\cEUTLDownload Value Name: bLoadSettingsFromURL Type: REG_DWORD Value: 0 Configure the policy value for User Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Load trusted certificates from an Adobe EUTL server' to 'Disabled'.

b

Adobe Acrobat Pro DC Continuous Protected Mode must be enabled.

RMF Control: SC-39
Severity: M
CCI: CCI-002530
Version: AADC-CN-001010
Vuln IDs: V-213127
Rule IDs: SV-213127r766538_rule

Protected Mode is a "sandbox" that is essentially a read-only mode. When enabled, Acrobat allows the execution environment of untrusted PDF's and the processes the PDF may invoke but also presumes all PDFs are potentially malicious and confines processing to a restricted sandbox.

Fix: F-14362r766537_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: bProtectedMode Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > 'Protected Mode' to 'Enabled'.

b

Adobe Acrobat Pro DC Continuous Protected View must be enabled.

RMF Control: SC-39
Severity: M
CCI: CCI-002530
Version: AADC-CN-001015
Vuln IDs: V-213128
Rule IDs: SV-213128r766541_rule

Protected View is a "super-sandbox" that is essentially a read-only mode. When enabled, Acrobat strictly confines the execution environment of untrusted PDF's and the processes the PDF may invoke. Acrobat also assumes all PDFs are potentially malicious and confines processing to a restricted sandbox. When the PDF is opened, the user is presented with the option to trust the document. When the user chooses to trust the document, all features are enabled, this action assigns trust to the document and adds the document to the users' list of Privileged Locations.

Fix: F-14363r766540_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: iProtectedView Type: REG_DWORD Value: 2 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > Security (Enhanced) > 'Protected View' to 'Enabled' and select 'All files' in the drop down box.

a

Adobe Acrobat Pro DC Continuous Default Handler changes must be disabled.

RMF Control: CM-5
Severity: L
CCI: CCI-001499
Version: AADC-CN-001280
Vuln IDs: V-213130
Rule IDs: SV-213130r766544_rule

Acrobat Pro allows users to change the version of Acrobat Pro that is used to read PDF files. This is a risk if multiple versions of Acrobat are installed on the system and the other version has dissimilar security configurations or known vulnerabilities. When the Default PDF Handler is disabled, the end users will not be able to change the default PDF viewer.

Fix: F-14365r766543_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: bDisablePDFHandlerSwitching Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > General > 'Disable PDF handler switching' to 'Enabled'.

b

Adobe Acrobat Pro DC Continuous must disable the ability to store files on Acrobat.com.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: AADC-CN-001285
Vuln IDs: V-213131
Rule IDs: SV-213131r766547_rule

Adobe Acrobat Pro DC provides the ability to store PDF files on Adobe.com servers. Allowing users to store files on non-DoD systems introduces risk of data compromise.

Fix: F-14366r766546_fix

Configure the following registry value: Note: The Key Name "cCloud" is not created by default in the Acrobat Pro DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cCloud Value Name: bDisableADCFileStore Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > 'Store files on Adobe.com' to 'Disabled'.

b

Adobe Acrobat Pro DC Continuous Cloud Synchronization must be disabled.

RMF Control: CM-7
Severity: M
CCI: CCI-000381
Version: AADC-CN-001290
Vuln IDs: V-213132
Rule IDs: SV-213132r766550_rule

By default, Adobe online services are tightly integrated in Adobe Acrobat. 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-14367r766549_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cServices Value Name: bTogglePrefsSync Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > 'Cloud Synchronization' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous Repair Installation must be disabled.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: AADC-CN-001295
Vuln IDs: V-213133
Rule IDs: SV-213133r766553_rule

When Repair Installation is disabled the user does not have the option (Help Menu) or ability to repair an Adobe Acrobat Pro DC install. Ability to repair includes the risk that established security settings could be overwritten.

Fix: F-14368r766552_fix

Configure the following registry value: For 32 bit: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Adobe\Adobe Acrobat\DC\Installer For 64 bit: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Wow6432Node\Adobe\Adobe Acrobat\DC\Installer Value Name: DisableMaintenance Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > Help > 'Repair Installation on 32/64 bit' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous third-party web connectors must be disabled.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: AADC-CN-001300
Vuln IDs: V-213134
Rule IDs: SV-213134r766556_rule

Third-party connectors include services such as Dropbox and Google Drive. When third-party web connectors are disabled, it prevents access to third-party services for file storage. Allowing access to online storage services introduces the risk of data loss or data exfiltration.

Fix: F-14369r766555_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cServices Value Name: bToggleWebConnectors Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > 'Third-party web connectors' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous Webmail must be disabled.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: AADC-CN-001305
Vuln IDs: V-213135
Rule IDs: SV-213135r766559_rule

Acrobat Pro DC provides a Webmail capability. This allows users to send PDFs as email attachments using any mail account that supports SMTP/IMAP protocols. In addition to existing desktop email clients, users can now configure these mail accounts by providing User Name, Password, IMAP and SMTP details. The capability allows users to utilize Gmail and Yahoo mail accounts to send PDF files directly from within the Acrobat application. This capability allows the user to by-pass existing email protections provided by DoD email services.

Fix: F-14370r766558_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cWebmailProfiles Value Name: bDisableWebmail Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > 'WebMail' to 'Disabled'.

a

The Adobe Acrobat Pro DC Continuous Welcome Screen must be disabled.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: AADC-CN-001310
Vuln IDs: V-213136
Rule IDs: SV-213136r766562_rule

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

Fix: F-14371r766561_fix

Configure the following registry value: Note: The Key Name "cWelcomeScreen" is not created by default in the Acrobat Pro DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cWelcomeScreen Value Name: bShowWelcomeScreen Type: REG_DWORD Value: 0 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > 'Welcome Screen' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous SharePoint and Office365 access must be disabled.

RMF Control: CM-7
Severity: L
CCI: CCI-000381
Version: AADC-CN-001315
Vuln IDs: V-213137
Rule IDs: SV-213137r766565_rule

Both SharePoint and Office365 configurations are shared in one setting. Disabling this setting removes the user's ability to use both SharePoint and Office365 cloud features and functions. If the user is allowed to store files on public cloud services, there is a risk of data compromise.

Fix: F-14372r766564_fix

Configure the following registry value: Note: The Key Name "cSharePoint" is not created by default in the Acrobat Pro DC install and must be created. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cSharePoint Value Name: bDisableSharePointFeatures Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > 'SharePoint and Office 365 access' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous Periodic downloading of Adobe certificates must be disabled.

RMF Control: SC-23
Severity: L
CCI: CCI-002470
Version: AADC-CN-001320
Vuln IDs: V-213138
Rule IDs: SV-213138r766568_rule

By default, the user can update Adobe certificates from an Adobe server through the GUI. When updating Adobe certificates is disabled, it prevents the automatic download and installation of certificates and disables and locks the end user's ability to download those certificates.

Fix: F-14373r766567_fix

Configure the following registry value: Registry Hive: HKEY_CURRENT_USER Registry Path: \Software\Adobe\Adobe Acrobat\DC\Security\cDigSig\cAdobeDownload Value Name: bLoadSettingsFromURL Type: REG_DWORD Value: 0 Configure the policy value for User Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Load trusted certificates from an Adobe AATL server' to 'Disabled'.

a

Adobe Acrobat Pro DC Continuous privileged host locations must be disabled.

RMF Control: CM-5
Severity: L
CCI: CCI-001813
Version: AADC-CN-001325
Vuln IDs: V-213139
Rule IDs: SV-213139r766571_rule

Privileged Locations are the primary method Acrobat uses to allow users and admins to specify trusted content that should be exempt from security restrictions, such as when Enhanced Security is enabled. A Privileged Location may be a file, folder, or a host. If the user is allowed to set a Privileged Location, they could bypass security protections.

Fix: F-14374r766570_fix

Configure the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown Value Name: bDisableTrustedSites Type: REG_DWORD Value: 1 Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Security (Enhanced) > 'Privileged host locations' to 'Disabled'.

b

Adobe Acrobat Pro DC Continuous FIPS mode must be enabled.

RMF Control: SC-13
Severity: M
CCI: CCI-002450
Version: AADC-CN-000955
Vuln IDs: V-245874
Rule IDs: SV-245874r766580_rule

Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The application must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.

Fix: F-49260r766582_fix

Configure the following registry value: Registry Hive: HKEY_CURRENT_USER Registry Path: \Software\Adobe\Adobe Acrobat\DC\AVGeneral Value Name: bFIPSMode Type: REG_DWORD Value: 1 Configure the policy value for User Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > 'Enable FIPS' to 'Enabled'.