| V-71193 | Medium | Trusted add-ins behavior for email must be configured. | The Outlook object model includes entry points to access Outlook data, save data to specified locations, and send email messages, all of which can be used by malicious application developers. To... |
| V-71239 | Medium | Automatic download content for email in Safe Senders list must be disallowed. | Malicious email senders can send HTML email messages with embedded Web beacons, or pictures and other content from external servers that can be used to track whether specific recipients have... |
| V-71195 | Medium | S/Mime interoperability with external clients for message handling must be configured. | In some situations, administrators might wish to use an external program, such as an add-in, to handle S/MIME message decryption. If your organization works with encrypted messages that the... |
| V-71235 | Medium | Retrieving of CRL data must be set for online action. | This policy setting controls how Outlook retrieves Certificate Revocation Lists to verify the validity of certificates. Certificate revocation lists (CRLs) are lists of digital certificates that... |
| V-71237 | Medium | External content and pictures in HTML email must be displayed. | Malicious email senders can send HTML email messages with embedded Web beacons, which are pictures and other content from external servers that can be used to track whether specific recipients... |
| V-71231 | Medium | Send all signed messages as clear signed messages must be configured. | When users sign email messages with their signing certificate and send them, Outlook uses the sender's private key to encrypt the digital signature but sends the messages as clear text, unless... |
| V-71233 | Medium | Automatic sending s/Mime receipt requests must be disallowed. | Incoming signed or encrypted messages might include S/MIME receipt requests. S/MIME receipts provide confirmation that messages are received unaltered, and can include information about who opened... |
| V-71115 | Medium | Navigation to URLs embedded in Office products must be blocked. | 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... |
| V-71279 | Medium | Outlook Rich Text options must be set for converting to plain text format. | Outlook automatically converts RTF formatted messages that are sent over the Internet to HTML format, so that the message formatting is maintained and attachments are received.
This setting... |
| V-71133 | Medium | Level of calendar details that a user can publish must be restricted. | Outlook users can share their calendars with selected others by publishing them to the Microsoft Office Outlook Calendar Sharing Service. Users can choose from three levels of detail:
*... |
| V-71229 | Medium | Run in FIPS compliant mode must be enforced. | Outlook can run in a mode that complies with Federal Information Processing Standards (FIPS), a set of standards published by the National Institute of Standards and Technology (NIST) for use by... |
| V-71137 | Medium | Plain Text Options for outbound email must be configured. | If outgoing mail is formatted in certain ways, for example, if attachments are encoded in UUENCODE format, attackers might manipulate the messages for their own purposes. If UUENCODE formatting is... |
| V-71259 | Medium | Disabling download full text of articles as HTML must be configured. | Many RSS feeds use messages that contain a brief summary of a larger message or an article with a link to the full content. Users can configure Outlook to automatically download the linked content... |
| V-71135 | Medium | Access restriction settings for published calendars must be configured. | Users can share their calendars with others by publishing them to the Microsoft Office Online Calendar Sharing Services and to a server that supports the World Wide Web Distributed Authoring and... |
| V-71271 | Medium | Outlook must be configured not to prompt users to choose security settings if default settings fail. | This policy prompts the user to choose security settings if default settings fail, but allowing users to select their own security settings would result in inconsistent enforcement in the... |
| V-71255 | Medium | Outlook must be configured to force authentication when connecting to an Exchange server. | Exchange Server supports the Kerberos authentication protocol and NTLM for authentication. The Kerberos protocol is the more secure authentication method and is supported on Windows 2000 Server... |
| V-71171 | Medium | Object Model Prompt behavior for programmatic address books must be configured. | If an untrusted application accesses the address book, the application could gain access to sensitive data and potentially change that data. By default, when an untrusted application attempts to... |
| V-71253 | Medium | RPC encryption between Outlook and Exchange server must be enforced. | The remote procedure call (RPC) communication channel between an Outlook client computer and an Exchange server is not encrypted. If a malicious individual is able to eavesdrop on the network... |
| V-71273 | Medium | Outlook minimum encryption key length settings must be set. | This setting allows the minimum key length for an encrypted email message to be configured. |
| V-71251 | Medium | Hyperlinks in suspected phishing email messages must be disallowed. | Outlook's Junk E-mail Filter evaluates each incoming message for possible spam or phishing content. Suspicious message detection is always turned on. By default, Outlook handles suspicious... |
| V-71155 | Medium | Users customizing attachment security settings must be prevented. | All installed trusted COM addins can be trusted. Exchange settings for the addins still override if present and this option is selected. |
| V-71157 | Medium | Outlook Security Mode must be configured to use Group Policy settings. | If users can configure security themselves, they might choose levels of security that leave their computers vulnerable to attack. By default, Outlook users can configure security for themselves,... |
| V-71151 | Medium | The Add-In Trust Level must be configured. | Under normal circumstances the installed COM add-ins are applications that have been approved and intentionally deployed by the organization and therefore they should not pose a security threat. ... |
| V-71179 | Medium | Object Model Prompt behavior for accessing User Property Formula must be configured. | A custom form in Outlook could be used to gain access to sensitive address book data and potentially to change that data. By default, when a user tries to bind an address information field to a... |
| V-71111 | Medium | The Internet Explorer Bind to Object functionality must be enabled. | 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... |
| V-71113 | Medium | The Saved from URL mark must be selected to enforce Internet zone processing. | 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... |
| V-71123 | Medium | File Downloads must be configured for proper restrictions. | 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... |
| V-71159 | Medium | The ability to display level 1 attachments must be disallowed. | To protect users from viruses and other harmful files, Outlook uses two levels of security, designated Level 1 and Level 2, to restrict access to files attached to email messages or other items.... |
| V-71117 | Medium | Scripted Window Security must be enforced. | 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... |
| V-71277 | Medium | Check e-mail addresses against addresses of certificates being used must be disallowed. | This policy setting controls whether Outlook verifies the user's email address with the address associated with the certificate used for signing. |
| V-71267 | Medium | Automatically downloading enclosures on RSS must be disallowed. | This policy setting controls Outlook's ability to automatically download enclosures on RSS items. |
| V-71265 | Medium | User Entries to Server List must be disallowed. | If users are able to manually enter the addresses of servers that are not approved by the organization, they could use servers that do not meet your organization's information security... |
| V-71263 | Medium | Internet calendar integration in Outlook must be disabled. | The Internet Calendar feature in Outlook enables users to publish calendars online (using the webcal:// protocol) and subscribe to calendars that others have published. When users subscribe to an... |
| V-71261 | Medium | Automatic download of Internet Calendar appointment attachments must be disallowed. | Files attached to Internet Calendar appointments could contain malicious code that could be used to compromise a computer. By default, Outlook does not download attachments when retrieving... |
| V-71275 | Medium | Replies or forwards to signed/encrypted messages must be signed/encrypted. | This setting controls whether replies and forwards to signed/encrypted mail should also be signed/encrypted. |
| V-71227 | Medium | Message formats must be set to use SMime. | Email typically travels over open networks and is passed from server to server. Messages are therefore vulnerable to interception, and attackers might read or alter their contents. It is therefore... |
| V-71269 | Medium | Default message format must be set to use Plain Text. | Outlook uses HTML as the default email format. HTML format poses a security risk by embedding information into the email itself, which could allow for release of sensitive information. If a user... |
| V-71125 | Medium | Protection from zone elevation must be enforced. | 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... |
| V-71127 | Medium | ActiveX installs must be configured for proper restrictions. | 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... |
| V-71121 | Medium | Links that invoke instances of Internet Explorer from within an Office product must be blocked. | 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... |
| V-71249 | Medium | Always warn on untrusted macros must be enforced. | To protect users from dangerous code, the Outlook default configuration disables all macros that are not trusted, including unsigned macros, macros with expired or invalid signatures, and macros... |
| V-71173 | Medium | Object Model Prompt behavior for programmatic access of user address data must be configured. | If an untrusted application accesses the recipient fields, the application could gain access to sensitive data and potentially change that data. This could result in mail being sent to the wrong... |
| V-71245 | Medium | Internet with Safe Zones for Picture Download must be disabled. | Malicious email senders can send HTML email messages with embedded Web beacons, which are pictures and other content from external servers that can be used to track whether recipients open the... |
| V-71247 | Medium | Intranet with Safe Zones for automatic picture downloads must be configured. | Malicious email senders can send HTML email messages with embedded Web beacons, which are pictures and other content from external servers that can be used to track whether recipients open the... |
| V-71129 | Medium | Publishing calendars to Office Online must be prevented. | Outlook users can share their calendars with selected others by publishing them to the Microsoft Office Outlook Calendar Sharing Service. Users can control who can view their calendar and at what... |
| V-71241 | Medium | Permit download of content from safe zones must be configured. | By default, Outlook automatically downloads content from sites that are considered "safe," as defined in the Security tab of the Internet Options dialog box in Internet Explorer. This... |
| V-71243 | Medium | IE Trusted Zones assumed trusted must be blocked. | Malicious users can send HTML email messages with embedded Web beacons, which are pictures and other content from external servers that can be used to track whether specific recipients open the... |
| V-71161 | Medium | Level 1 file extensions must be blocked and not removed. | Malicious code is often spread through e-mail. Some viruses have the ability to send copies of themselves to other people in the victim's Address Book or Contacts list, and such potentially... |
| V-71145 | Medium | Outlook Object Model scripts must be disallowed to run for shared folders. | In Outlook, folders can be associated with custom forms or folder home pages that include scripts that access the Outlook object model. These scripts can add functionality to the folders and items... |
| V-71165 | Medium | Scripts in One-Off Outlook forms must be disallowed. | Malicious code can be included within Outlook forms, and such code could be executed when users open the form. By default, Outlook does not run scripts in forms in which the script and the layout... |
| V-71119 | Medium | Add-on Management functionality must be allowed. | 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... |
| V-71167 | Medium | Custom Outlook Object Model (OOM) action execution prompts must be configured. | Custom actions add functionality to Outlook that can be triggered as part of a rule. Among other possible features, custom actions can be created that reply to messages in ways that circumvent the... |
| V-71169 | Medium | Object Model Prompt for programmatic email send behavior must be configured. | If an untrusted application programmatically sends email, that application could send mail that includes malicious code, impersonate a user, or launch a denial of service attack by sending a large... |
| V-71153 | Medium | The remember password for internet e-mail accounts must be disabled. | As a security precaution, password caching for email Internet protocols such as POP3 or IMAP may lead to password discovery and eventually to data loss. An attacker that is able to access the... |
| V-71175 | Medium | Object Model Prompt behavior for Meeting and Task Responses must be configured. | If an untrusted application programmatically responds to tasks or meeting requests, that application could impersonate a user response to the tasks or meeting requests with false information. By... |
| V-71149 | Medium | ActiveX One-Off forms must be configured. | Third-party ActiveX controls are not allowed to run in one-off forms in Outlook. This behavior can be changed so that Safe Controls (Microsoft Forms 2.0 controls and the Outlook Recipient and Body... |
| V-71147 | Medium | Outlook Object Model scripts must be disallowed to run for public folders. | In Outlook, folders can be associated with custom forms or folder home pages that include scripts that access the Outlook object model. These scripts can add functionality to the folders and items... |
| V-71163 | Medium | Level 2 file extensions must be blocked and not removed. | Malicious code is often spread through email. Some viruses have the ability to send copies of themselves to other people in the victim's Address Book or Contacts list, and such potentially harmful... |
| V-71109 | Medium | Disabling of user name and password syntax from being used in URLs must be enforced. | 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... |
| V-71131 | Medium | Publishing to a Web Distributed and Authoring (DAV) server must be prevented. | Outlook users can share their calendars with others by publishing them to a server that supports the World Wide Web Distributed Authoring and Versioning (WebDAV) protocol. Unlike the Microsoft... |
| V-71177 | Medium | Object Model Prompt behavior for the SaveAs method must be configured. | If an untrusted application uses the Save As command to programmatically save an item, the application could add malicious data to a user's inbox, a public folder, or an address book. By default,... |
