Microsoft Word 2013 STIG

Version

DTOO104

Vuln IDs

V-17173

Rule IDs

SV-53554r1_rule

The Uniform Resource Locator (URL) standard allows user authentication to be included in URL strings in the form http://username:password@example.com. A malicious user might use this URL syntax to create a hyperlink that appears to open a legitimate website but actually opens a deceptive (spoofed) website. For example, the URL http://www.wingtiptoys.com@example.com appears to open http://www.wingtiptoys.com but actually opens http://example.com. To protect users from such attacks, Internet Explorer usually blocks any URLs using this syntax. This functionality can be controlled separately for instances of Internet Explorer spawned by Office applications (for example, if a user clicks a link in an Office document or selects a menu option that loads a web page). If user names and passwords in URLs are allowed, users could be diverted to dangerous web pages, which could pose a security risk.System AdministratorInformation Assurance Officer

Checks: C-47707r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Disable user name and password" is set to "Enabled" and a check in the 'winword.exe' check box is selected. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_HTTP_USERNAME_PASSWORD_DISABLE Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46478r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Disable user name and password" to "Enabled" and place a check in the 'winword.exe' check box.

b

The Internet Explorer Bind to Object functionality must be enabled.

SC-18 - Medium - CCI-001695 - V-17174 - SV-53557r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO111

Vuln IDs

V-17174

Rule IDs

SV-53557r1_rule

Internet Explorer performs a number of safety checks before initializing an ActiveX control. It will not initialize a control if the kill bit for the control is set in the registry, or if the security settings for the zone in which the control is located do not allow it to be initialized. This functionality can be controlled separately for instances of Internet Explorer spawned by Office applications (for example, if a user clicks a link in an Office document or selects a menu option that loads a web page). A security risk could occur if potentially dangerous controls are allowed to load.System AdministratorInformation Assurance Officer

Checks: C-47709r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Bind to Object" is set to "Enabled" and a check in the 'winword.exe' check box is selected. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_SAFE_BINDTOOBJECT Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46481r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Bind to Object" to "Enabled" and place a check in the 'winword.exe' check box.

b

The Saved from URL mark must be selected to enforce Internet zone processing.

SC-18 - Medium - CCI-001170 - V-17175 - SV-53558r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO117

Vuln IDs

V-17175

Rule IDs

SV-53558r1_rule

Typically, when Internet Explorer loads a web page from a Universal Naming Convention (UNC) share that contains a Mark of the Web (MOTW) comment, indicating the page was saved from a site on the Internet, Internet Explorer runs the page in the Internet security zone instead of the less restrictive Local Intranet security zone. This functionality can be controlled separately for instances of Internet Explorer spawned by Office applications (for example, if a user clicks a link in an Office document or selects a menu option that loads a web page). If Internet Explorer does not evaluate the page for a MOTW, potentially dangerous code could be allowed to run.System AdministratorInformation Assurance Officer

Checks: C-47710r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Saved from URL" is set to "Enabled" and a check in the 'winword.exe' check box is selected. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_UNC_SAVEDFILECHECK Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46482r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Saved from URL" to "Enabled" and place a check in the 'winword.exe' check box.

b

Navigation to URLs embedded in Office products must be blocked.

SC-18 - Medium - CCI-001170 - V-17183 - SV-53561r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO123

Vuln IDs

V-17183

Rule IDs

SV-53561r1_rule

To protect users from attacks, Internet Explorer usually does not attempt to load malformed URLs. This functionality can be controlled separately for instances of Internet Explorer spawned by Office applications (for example, if a user clicks a link in an Office document or selects a menu option that loads a web page). If Internet Explorer attempts to load a malformed URL, a security risk could occur.System AdministratorInformation Assurance Officer

Checks: C-47713r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Navigate URL" is set to "Enabled" and a check in the 'winword.exe' check box is selected. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_VALIDATE_NAVIGATE_URL Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46485r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Navigate URL" to "Enabled" and place a check in the 'winword.exe' check box.

b

Links that invoke instances of Internet Explorer from within an Office product must be blocked.

SC-18 - Medium - CCI-001662 - V-17184 - SV-53565r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO129

Vuln IDs

V-17184

Rule IDs

SV-53565r1_rule

The Pop-up Blocker feature in Internet Explorer can be used to block most unwanted pop-up and pop-under windows from appearing. This functionality can be controlled separately for instances of Internet Explorer spawned by Office applications (for example, if a user clicks a link in an Office document or selects a menu option that loads a web page). If the Pop-up Blocker is disabled, disruptive and potentially dangerous pop-up windows could load and present a security risk.System AdministratorInformation Assurance Officer

Checks: C-47717r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Block popups" is set to "Enabled" and 'winword.exe' is checked. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBOC_POPUPMANAGEMENT Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46489r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Block popups" to "Enabled" and select 'winword.exe'.

b

Trust Bar Notifications for unsigned application add-ins must be blocked.

CM-5 - Medium - CCI-001749 - V-17187 - SV-53566r1_rule

RMF Control

CM-5

Severity

M

CCI

CCI-001749

Version

DTOO131

Vuln IDs

V-17187

Rule IDs

SV-53566r1_rule

If an application is configured to require all add-ins to be signed by a trusted publisher, any unsigned add-ins the application loads will be disabled and the application will display the Trust Bar at the top of the active window. The Trust Bar contains a message informing users about the unsigned add-in. If a user is allowed to make the determination to allow an unsigned add-in, it increases the risk of malicious code being introduced onto the user's computer or the network.System AdministratorInformation Assurance Officer

Checks: C-47718r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Disable Trust Bar Notification for unsigned application add-ins and block them" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security Criteria: If the value NoTBPromptUnsignedAddin is REG_DWORD = 1, this is not a finding.

Fix: F-46490r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Disable Trust Bar Notification for unsigned application add-ins and block them" to "Enabled".

b

All automatic loading from trusted locations must be disabled.

SC-18 - Medium - CCI-001170 - V-17471 - SV-53571r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO133

Vuln IDs

V-17471

Rule IDs

SV-53571r1_rule

Trusted locations specified in the Trust Center are used to define file locations assumed to be safe. Content, code, and add-ins are allowed to load from trusted locations with a minimal amount of security, without prompting the users for permission. If a dangerous file is opened from a trusted location, it will not be subject to standard security measures and could harm users' computers or data. By default, files located in trusted locations (those specified in the Trust Center) are assumed to be safe.System AdministratorInformation Assurance Officer

Checks: C-47720r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Trusted Locations "Disable all trusted locations" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\trusted locations Criteria: If the value AllLocationsDisabled is REG_DWORD = 1, this is not a finding.

Fix: F-46495r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Trusted Locations "Disable all trusted locations" to "Enabled".

b

Force encrypted macros to be scanned in open XML documents must be determined and configured.

SC-18 - Medium - CCI-001170 - V-17473 - SV-53575r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO142

Vuln IDs

V-17473

Rule IDs

SV-53575r1_rule

When an Office Open XML document (Word, Excel, and PowerPoint) is rights-managed, or password-protected, any macros embedded in the document are encrypted along with the rest of the contents. By default, these encrypted macros will be disabled unless they are scanned by antivirus software immediately before being loaded. If this default configuration is modified, Office products will not require encrypted macros to be scanned before loading. They will be handled as specified by the Office System macro security settings, which can cause macro viruses to load undetected and lead to data loss or reduced application functionality.System AdministratorInformation Assurance Officer

Checks: C-47723r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Scan encrypted macros in Word Open XML documents" is set to "Enabled (Scan encrypted macros (default))". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security Criteria: If the value WordBypassEncryptedMacroScan is REG_DWORD = 0, this is not a finding.

Fix: F-46499r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Scan encrypted macros in Word Open XML documents" to "Enabled (Scan encrypted macros (default))".

b

Disallowance of trusted locations on the network must be enforced.

SC-18 - Medium - CCI-001170 - V-17520 - SV-53572r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO134

Vuln IDs

V-17520

Rule IDs

SV-53572r1_rule

Files located in Trusted Locations and specified in the Trust Center are typically assumed to be safe. Content, code, and add-ins are allowed to load from Trusted Locations with minimal security and without prompting the user for permission. By default, users can specify Trusted Locations on network shares, or in other remote locations not under their direct control, by selecting the "Allow Trusted Locations on my network" (not recommended) check box in the Trusted Locations section of the Trust Center. If a dangerous file is opened from a trusted location, it will not be subject to typical security measures and could affect users' computers or data.System AdministratorInformation Assurance Officer

Checks: C-47721r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Trusted Locations "Allow Trusted Locations on the network" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\trusted locations Criteria: If the value AllowNetworkLocations is REG_DWORD = 0, this is not a finding.

Fix: F-46497r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Trusted Locations "Allow Trusted Locations on the network" to "Disabled".

b

The Save commands default file format must be configured.

CM-7 - Medium - CCI-000381 - V-17521 - SV-53574r1_rule

RMF Control

CM-7

Severity

M

CCI

CCI-000381

Version

DTOO139

Vuln IDs

V-17521

Rule IDs

SV-53574r1_rule

When users create new document files, Word 2013 saves them in the new Word 2013 .docx format. Ensure this setting is enabled to specify that all new files are created in Word 2013. If a new document is created in an earlier format, some users may not be able to open or use the file, or they may choose a format this is less secure than the Word 2013 format. Users can still select a specific format when they save files, but they cannot change default of this setting from the Word Options dialog box. This enforced user behavior ensures any change to the file format requires additional deliberate user interaction.System AdministratorInformation Assurance Officer

Checks: C-47722r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Save "default file format" is set to "Enabled Word Document (.docx)". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\options Criteria: If the value DefaultFormat is REG_SZ = (blank), this is not a finding.

Fix: F-46498r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Save "default file format" to "Enabled Word Document (.docx)".

b

Trust access for VBA must be disallowed.

CM-7 - Medium - CCI-000381 - V-17522 - SV-53576r1_rule

RMF Control

CM-7

Severity

M

CCI

CCI-000381

Version

DTOO146

Vuln IDs

V-17522

Rule IDs

SV-53576r1_rule

VSTO projects require access to the Visual Basic for Applications project system in Excel, PowerPoint, and Word, even though the projects do not use Visual Basic for Applications. Design-time support of controls in both Visual Basic and C# projects depends on the Visual Basic for Applications project system in Word and Excel. By default, Excel, Word, and PowerPoint do not allow automation clients to have programmatic access to VBA projects. Users can enable this by selecting the Trust access to the VBA project object model in the Macro Settings section of the Trust Center. However, doing so allows macros in any documents the user opens to access the core Visual Basic objects, methods, and properties, which represents a potential security hazard.System AdministratorInformation Assurance Officer

Checks: C-47724r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Trust access to Visual Basic Project" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security Criteria: If the value AccessVBOM is REG_DWORD = 0, this is not a finding.

Fix: F-46500r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Trust access to Visual Basic Project" to "Disabled".

b

Warning Bar settings for VBA macros must be configured.

CM-7 - Medium - CCI-000381 - V-17545 - SV-53586r2_rule

RMF Control

CM-7

Severity

M

CCI

CCI-000381

Version

DTOO304

Vuln IDs

V-17545

Rule IDs

SV-53586r2_rule

When users open files containing VBA macros, applications open the files with the macros disabled and display the Trust Bar with a warning that macros are present and have been disabled. Users may then enable these macros by clicking Options on the Trust Bar and selecting the option to enable them. Disabling or not configuring this setting may allow dangerous macros to become active on user computers or the network.System AdministratorInformation Assurance Officer

Checks: C-47733r2_chk

NOTE: If VBA support is not installed, this check is Not Applicable. Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "VBA Macro Notification Settings" is set to "Enabled (Disable all with notification)". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security Criteria: If the value VBAWarnings is REG_DWORD = 2, this is not a finding.

Fix: F-46510r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "VBA Macro Notification Settings" to "Enabled (Disable all with notification)".

b

The automatically update links feature must be disabled.

SC-18 - Medium - CCI-001170 - V-17811 - SV-53584r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO302

Vuln IDs

V-17811

Rule IDs

SV-53584r1_rule

When users open documents Word automatically updates any links to external content, such as graphics, Excel worksheets, and PowerPoint slides. To disable automatic updating, the user can click the Office Button, click Word Options, click Advanced, scroll to the General section, and then clear the Update automatic links at open check box. If Word is configured to automatically update links when documents are open, document content can change without the user's knowledge, which could put important information at risk.System AdministratorInformation Assurance OfficerECSC-1

Checks: C-47731r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Advanced "Update automatic links at Open" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\options Criteria: If the value DontUpdateLinks is REG_DWORD = 1, this is not a finding.

Fix: F-46508r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Advanced "Update automatic links at Open" to "Disabled".

b

A warning before printing that the document contains tracking changes must be provided.

CM-6 - Medium - CCI-000366 - V-17813 - SV-53585r2_rule

RMF Control

CM-6

Severity

M

CCI

CCI-000366

Version

DTOO303

Vuln IDs

V-17813

Rule IDs

SV-53585r2_rule

Tracked changes or comments embedded within a document may contain sensitive, insulting, or embarrassing information that the document owner forgot, or that a contributor may have inserted.System AdministratorInformation Assurance Officer

Checks: C-47732r2_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security "Warn before printing, saving or sending a file that contains tracked changes or comments" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\options Criteria: If the value WarnRevisions is REG_DWORD = 1, this is not a finding

Fix: F-46509r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security "Warn before printing, saving or sending a file that contains tracked changes or comments" to "Enabled".

b

Add-on Management functionality must be allowed.

SC-18 - Medium - CCI-001662 - V-26584 - SV-53563r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO126

Vuln IDs

V-26584

Rule IDs

SV-53563r1_rule

Internet Explorer add-ons are pieces of code, run in Internet Explorer, to provide additional functionality. Rogue add-ons may contain viruses or other malicious code. Disabling or not configuring this setting could allow malicious code or users to become active on user computers or the network. For example, a malicious user can monitor and then use keystrokes users type into Internet Explorer. Even legitimate add-ons may demand resources, compromising the performance of Internet Explorer, and the operating systems for user computers.System AdministratorInformation Assurance Officer

Checks: C-47715r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Add-on Management " is set to "Enabled" and 'winword.exe' is checked. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_ADDON_MANAGEMENT Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46487r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Add-on Management " to "Enabled" and 'winword.exe' is checked.

b

Protection from zone elevation must be enforced.

SC-18 - Medium - CCI-001695 - V-26585 - SV-53577r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO209

Vuln IDs

V-26585

Rule IDs

SV-53577r1_rule

Internet Explorer places restrictions on each web page users can use the browser to open. Web pages on a user's local computer have the fewest security restrictions and reside in the Local Machine zone, making this security zone a prime target for malicious users and code. Disabling or not configuring this setting could allow pages in the Internet zone to navigate to pages in the Local Machine zone to then run code to elevate privileges. This could allow malicious code or users to become active on user computers or the network.System AdministratorInformation Assurance Officer

Checks: C-47725r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Protection From Zone Elevation" is set to "Enabled" and 'winword.exe' is checked. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_ZONE_ELEVATION Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46501r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Protection From Zone Elevation" to "Enabled" and 'winword.exe' is checked.

b

ActiveX Installs must be configured for proper restriction.

SC-18 - Medium - CCI-002460 - V-26586 - SV-53578r1_rule

RMF Control

SC-18

Severity

M

CCI

CCI-002460

Version

DTOO211

Vuln IDs

V-26586

Rule IDs

SV-53578r1_rule

Microsoft ActiveX controls allow unmanaged, unprotected code to run on the user computers. ActiveX controls do not run within a protected container in the browser like the other types of HTML or Microsoft Silverlight-based controls. Disabling or not configuring this setting does not block prompts for ActiveX control installations and these prompts display to users. This could allow malicious code to become active on user computers or the network.System AdministratorInformation Assurance Officer

Checks: C-47726r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Restrict ActiveX Install" is set to "Enabled" and 'winword.exe' is checked. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_RESTRICT_ACTIVEXINSTALL Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46502r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Restrict ActiveX Install" to "Enabled" and 'winword.exe' is checked.

b

File Downloads must be configured for proper restrictions.

SC-18 - Medium - CCI-001169 - V-26587 - SV-53568r1_rule

RMF Control

SC-18

Severity

M

CCI

CCI-001169

Version

DTOO132

Vuln IDs

V-26587

Rule IDs

SV-53568r1_rule

Disabling this setting allows websites to present file download prompts via code without the user specifically initiating the download. User preferences may also allow the download to occur without prompting or interaction with the user. Even if Internet Explorer prompts the user to accept the download, some websites abuse this functionality. Malicious websites may continually prompt users to download a file or present confusing dialog boxes to trick users into downloading or running a file. If the download occurs and it contains malicious code, the code could become active on user computers or the network.System AdministratorInformation Assurance Officer

Checks: C-47719r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Restrict File Download" is set to "Enabled" and 'winword.exe' is checked. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_RESTRICT_FILEDOWNLOAD Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46493r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Restrict File Download" to "Enabled" and 'winword.exe' is checked.

b

Scripted Window Security must be enforced.

SC-18 - Medium - CCI-001695 - V-26588 - SV-53562r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO124

Vuln IDs

V-26588

Rule IDs

SV-53562r1_rule

Malicious websites often try to confuse or trick users into giving a site permission to perform an action allowing the site to take control of the users' computers in some manner. Disabling or not configuring this setting allows unknown websites to: -Create browser windows appearing to be from the local operating system. -Draw active windows displaying outside of the viewable areas of the screen capturing keyboard input. -Overlay parent windows with their own browser windows to hide important system information, choices or prompts.System AdministratorInformation Assurance Officer

Checks: C-47714r1_chk

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Scripted Window Security Restrictions" is set to "Enabled" and 'winword.exe' is checked. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WINDOW_RESTRICTIONS Criteria: If the value winword.exe is REG_DWORD = 1, this is not a finding.

Fix: F-46486r1_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2013 (Machine) -> Security Settings -> IE Security "Scripted Window Security Restrictions" to "Enabled" and 'winword.exe' is checked.

b

Add-ins to Office applications must be signed by a Trusted Publisher.

CM-5 - Medium - CCI-001749 - V-26589 - SV-53564r1_rule

RMF Control

CM-5

Severity

M

CCI

CCI-001749

Version

DTOO127

Vuln IDs

V-26589

Rule IDs

SV-53564r1_rule

Office 2013 applications do not check the digital signature on application add-ins before opening them. Disabling or not configuring this setting may allow an application to load a dangerous add-in. As a result, malicious code could become active on user computers or the network.System AdministratorInformation Assurance Officer

Checks: C-47716r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Require that application add-ins are signed by Trusted Publisher" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security Criteria: If the value RequireAddinSig is REG_DWORD = 1, this is not a finding.

Fix: F-46488r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center "Require that application add-ins are signed by Trusted Publisher" to "Enabled".

b

Configuration for file validation must be enforced.

SC-18 - Medium - CCI-001695 - V-26592 - SV-53559r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO119

Vuln IDs

V-26592

Rule IDs

SV-53559r1_rule

Office File Validation helps detect and prevent a kind of exploit known as a file format attack or file fuzzing attack. File format attacks exploit the integrity of a file. They occur when someone modifies the structure of a file with the intent of adding malicious code. Usually the malicious code is run remotely and is used to elevate the privilege of restricted accounts on the computer. As a result, an attacker could gain access to a computer that they did not previously have access to. This could enable an attacker to read sensitive information from the computer's hard disk drive or install malware, such as a worm or a key logging program. The Office File Validation feature helps prevent file format attacks by scanning and validating files before they are opened. To validate files, Office File Validation compares a file's structure to a predefined file schema, which is a set of rules that determine what a readable file looks like. If Office File Validation detects that a file's structure does not follow all rules that are described in the schema, the file does not pass validation.System AdministratorInformation Assurance Officer

Checks: C-47711r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security "Turn off file validation" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\filevalidation Criteria: If the value EnableOnLoad is REG_DWORD = 1, this is not a finding.

Fix: F-46483r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security "Turn off file validation" to "Disabled".

b

Blocking as default file block opening behavior must be enforced.

SC-18 - Medium - CCI-001662 - V-26612 - SV-53555r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO110

Vuln IDs

V-26612

Rule IDs

SV-53555r1_rule

Users can open, view, or edit a large number of file types in Office 2013. Some file types are safer than others, as some could allow malicious code to become active on user computers or the network. For this reason, disabling or not configuring this setting could allow malicious code to become active on user computers or the network.System AdministratorInformation Assurance Officer

Checks: C-47708r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Set default file block behavior" is set to "Enabled: Blocked files are not opened". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\fileblock Criteria: If the value OpenInProtectedView is REG_DWORD = 0, this is not a finding.

Fix: F-46480r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Set default file block behavior" to "Enabled: Blocked files are not opened".

b

Files from the Internet zone must be opened in Protected View.

SC-18 - Medium - CCI-001662 - V-26614 - SV-53560r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO121

Vuln IDs

V-26614

Rule IDs

SV-53560r1_rule

This policy setting allows for determining if files downloaded from the Internet zone open in Protected View. If enabling this policy setting, files downloaded from the Internet zone do not open in Protected View. If disabling or not configuring this policy setting, files downloaded from the Internet zone open in Protected View.System AdministratorInformation Assurance Officer

Checks: C-47712r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Do not open files from the Internet zone in Protected View" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\protectedview Criteria: If the value DisableInternetFilesInPV is REG_DWORD = 0, this is not a finding.

Fix: F-46484r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Do not open files from the Internet zone in Protected View" to "Disabled".

b

Files in unsafe locations must be opened in Protected View.

SC-18 - Medium - CCI-001170 - V-26615 - SV-53579r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO288

Vuln IDs

V-26615

Rule IDs

SV-53579r1_rule

This policy setting determines if files located in unsafe locations will open in Protected View. If unsafe locations have not been specified, only the "Downloaded Program Files" and "Temporary Internet Files" folders are considered unsafe locations. If enabling this policy setting, files located in unsafe locations do not open in Protected View. If disabling or not configuring this policy setting, files located in unsafe locations open in Protected View.System AdministratorInformation Assurance Officer

Checks: C-47727r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Do not open files in unsafe locations in Protected View" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\protectedview Criteria: If the value DisableUnsafeLocationsInPV is REG_DWORD = 0, this is not a finding.

Fix: F-46503r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Do not open files in unsafe locations in Protected View" to "Disabled".

b

Document behavior if file validation fails must be set.

SC-18 - Medium - CCI-001170 - V-26616 - SV-53581r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO292

Vuln IDs

V-26616

Rule IDs

SV-53581r1_rule

This policy key controls the behavior of how Office documents should be handled when failing file validation. By requiring such documents to be opened in Protected View, any potentially malicious code would be disabled, allowing the user to edit the document and resaved correctly.System AdministratorInformation Assurance Officer

Checks: C-47729r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Set document behavior if file validation fails" is set to "Enabled: Open in Protected View" and Unchecked for "Do not allow edit". Procedure: Use the Windows Registry Editor to navigate to the following keys: If both HKCU\Software\Policies\Microsoft\Office\15.0\word\security\filevalidation\OpenInProtectedView is set to REG_DWORD = 1 and HKCU\Software\Policies\Microsoft\Office\15.0\word\security\filevalidation\DisableEditFromPV is set to REG_DWORD = 1, this is not a finding. If either, or both keys is not set to REG_DWORD = 1, this is a finding.

Fix: F-46506r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Set document behavior if file validation fails" to "Enabled: Open in Protected View" and Unchecked for "Do not allow edit".

b

Attachments opened from Outlook must be in Protected View.

SC-18 - Medium - CCI-001170 - V-26617 - SV-53582r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO293

Vuln IDs

V-26617

Rule IDs

SV-53582r1_rule

This policy setting allows for determining if Word files in Outlook attachments open in Protected View. If enabling this policy setting, Outlook attachments do not open in Protected View. If disabling or not configuring this policy setting, Outlook attachments open in Protected View.System AdministratorInformation Assurance Officer

Checks: C-47730r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Turn off Protected View for attachments opened from Outlook" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following keys: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\protectedview Criteria: If the value DisableAttachmentsInPV is REG_DWORD = 0, this is not a finding.

Fix: F-46507r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> Protected View "Turn off Protected View for attachments opened from Outlook" to "Disabled".

b

Online translation dictionaries must not be used.

SC-18 - Medium - CCI-001170 - V-26648 - SV-53588r2_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO328

Vuln IDs

V-26648

Rule IDs

SV-53588r2_rule

This setting allows you to prevent online dictionaries from being used for the translation of text through the Research pane.System AdministratorInformation Assurance Officer

Checks: C-47735r3_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Miscellaneous -> "Use online translation dictionaries" is set to Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\software\policies\Microsoft\office\15.0\common\research\translation Criteria: If the value useonline is REG_DWORD = 0, this is not a finding.

Fix: F-46513r2_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Miscellaneous -> "Use online translation dictionaries" to "Disabled".

b

Word 2 and earlier binary documents and templates must be blocked for open/save.

SC-18 - Medium - CCI-001662 - V-26653 - SV-53590r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO333

Vuln IDs

V-26653

Rule IDs

SV-53590r1_rule

This setting specifies whether users can open, view, edit, or save Word files saved in the specified format. Enabling block of the specified format mitigates zero-day security attacks (which are attacks that occur during between the time that a vulnerability becomes publicly known and a software update or service pack is available) by temporarily preventing users from opening specific types of files and to prevent a user from opening files that have been saved in earlier and pre-release (beta) Microsoft Office formats.System AdministratorInformation Assurance Officer

Checks: C-47736r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 2 and earlier binary documents and templates" is set to "Enabled: Open/Save blocked, use open policy". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\fileblock Criteria: If the value Word2Files is REG_DWORD = 2, this is not a finding.

Fix: F-46514r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 2 and earlier binary documents and templates" to "Enabled: Open/Save blocked, use open policy".

b

Word 2000 binary documents and templates must be configured to edit in protected view.

SC-18 - Medium - CCI-001662 - V-26654 - SV-53591r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO334

Vuln IDs

V-26654

Rule IDs

SV-53591r1_rule

This setting specifies whether users can open, view, edit, or save files saved in the specified format. Enabling the editing of the specified format in protected view, it mitigates zero-day security attacks (which are attacks that occur during between the time that a vulnerability becomes publicly known and a software update or service pack is available) by temporarily preventing users from opening specific types of files and to prevent a user from opening files that have been saved in earlier and pre-release (beta) Microsoft Office formats.System AdministratorInformation Assurance Officer

Checks: C-47737r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 2000 binary documents and templates" is set to "Enabled: Allow editing and open in Protected View". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\fileblock Criteria: If the value Word2000Files is REG_DWORD = 5, this is not a finding.

Fix: F-46515r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 2000 binary documents and templates" to "Enabled: Allow editing and open in Protected View".

b

Word 6.0 binary documents and templates must be configured for block open/save actions.

SC-18 - Medium - CCI-001662 - V-26656 - SV-53593r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO336

Vuln IDs

V-26656

Rule IDs

SV-53593r1_rule

This setting specifies whether users can open, view, edit, or save Word files saved in the specified format. Enabling block of the specified format mitigates zero-day security attacks (which are attacks that occur during between the time that a vulnerability becomes publicly known and a software update or service pack is available) by temporarily preventing users from opening specific types of files and to prevent a user from opening files that have been saved in earlier and pre-release (beta) Microsoft Office formats.System AdministratorInformation Assurance Officer

Checks: C-47739r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 6.0 binary documents and templates" is set to "Enabled: Open/Save blocked, use open policy". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\fileblock Criteria: If the value Word60Files is REG_DWORD = 2, this is not a finding.

Fix: F-46518r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 6.0 binary documents and templates" to "Enabled: Open/Save blocked, use open policy".

b

Word 95 binary documents and templates must be configured to edit in protected view.

SC-18 - Medium - CCI-001662 - V-26657 - SV-53594r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO337

Vuln IDs

V-26657

Rule IDs

SV-53594r1_rule

This setting specifies whether users can open, view, edit, or save files saved in the specified format. Enabling the editing of the specified format in protected view, it mitigates zero-day security attacks (which are attacks that occur during between the time that a vulnerability becomes publicly known and a software update or service pack is available) by temporarily preventing users from opening specific types of files and to prevent a user from opening files that have been saved in earlier and pre-release (beta) Microsoft Office formats.System AdministratorInformation Assurance Officer

Checks: C-47740r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 95 binary documents and templates" is set to "Enabled: Allow editing and open in Protected View". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\fileblock Criteria: If the value Word95Files is REG_DWORD = 5, this is not a finding.

Fix: F-46519r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 95 binary documents and templates" to "Enabled: Allow editing and open in Protected View".

b

Word 97 binary documents and templates must be configured to edit in protected view.

SC-18 - Medium - CCI-001662 - V-26658 - SV-53595r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO338

Vuln IDs

V-26658

Rule IDs

SV-53595r1_rule

This setting specifies whether users can open, view, edit, or save files saved in the specified format. Enabling the editing of the specified format in protected view, it mitigates zero-day security attacks (which are attacks that occur during between the time that a vulnerability becomes publicly known and a software update or service pack is available) by temporarily preventing users from opening specific types of files and to prevent a user from opening files that have been saved in earlier and pre-release (beta) Microsoft Office formats.System AdministratorInformation Assurance Officer

Checks: C-47741r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 97 binary documents and templates" is set to "Enabled: Allow editing and open in Protected View". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\fileblock Criteria: If the value Word97Files is REG_DWORD = 5, this is not a finding.

Fix: F-46520r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word 97 binary documents and templates" to "Enabled: Allow editing and open in Protected View".

b

Word XP binary documents and templates must be configured to edit in protected view.

SC-18 - Medium - CCI-001662 - V-26659 - SV-55922r1_rule

RMF Control

SC-18

Severity

M

CCI

Version

DTOO339

Vuln IDs

V-26659

Rule IDs

SV-55922r1_rule

This setting specifies whether users can open, view, edit, or save files saved in the specified format. Enabling the editing of the specified format in protected view, it mitigates zero-day security attacks (which are attacks that occur during between the time that a vulnerability becomes publicly known and a software update or service pack is available) by temporarily preventing users from opening specific types of files and to prevent a user from opening files that have been saved in earlier and pre-release (beta) Microsoft Office formats.System AdministratorInformation Assurance Officer

Checks: C-47742r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word XP binary documents and templates" is set to "Enabled: Allow editing and open in Protected View". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\security\fileblock Criteria: If the value WordXPFiles is REG_DWORD = 5, this is not a finding.

Fix: F-46522r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Security -> Trust Center -> File Block Settings "Word XP binary documents and templates" to "Enabled: Allow editing and open in Protected View".

b

Word must be configured to warn when opening a document with custom XML markup.

CM-6 - Medium - CCI-000366 - V-41147 - SV-53598r1_rule

RMF Control

CM-6

Severity

M

CCI

CCI-000366

Version

DTOO426

Vuln IDs

V-41147

Rule IDs

SV-53598r1_rule

This policy setting specifies how Word behaves when opening a document that contains custom XML markup. Versions of Word that are distributed by Microsoft after January 10, 2010 no longer read the custom XML markup that may be contained within (.docx, .docm, .dotx, .dotm or .xml files. The new versions of Word 2007, Word 2010, and Word 2013 can still open these files, but any custom XML markup is removed. Configuring this setting will prompt the user with a warning, notifying of the lost of the XML markup. While this is the default setting, explicitly configuring the setting will ensure users are prompted.System AdministratorInformation Assurance Officer

Checks: C-47743r1_chk

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Advanced -> "Custom markup warning" is set to "Enabled: Prompt". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\word\options Criteria: If the value custommarkupwarning is REG_DWORD = 1, this is not a finding.

Fix: F-46523r1_fix

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Word 2013 -> Word Options -> Advanced -> "Custom markup warning" to "Enabled: Prompt".

b

Macros must be blocked from running in Office 2013 files from the Internet.

SC-18 - Medium - CCI-001170 - V-72829 - SV-87481r1_rule

RMF Control

SC-18

Severity

M

CCI