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Google Chrome Current Windows Security Technical Implementation Guide

V2R1 · · · Released 23 Oct 2020 · 44 rules
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This Security Technical Implementation Guide is published as a tool to improve the security of Department of Defense (DoD) information systems. The requirements are derived from the National Institute of Standards and Technology (NIST) 800-53 and related documents. Comments or proposed revisions to this document should be sent via email to the following address: disa.stig_spt@mail.mil.
Digest of Updates vs. V1R19 · 24 Jul 2020 +44 −44

Comparison against the immediately-prior release (V1R19). Rule matching uses the Group Vuln ID. Content-change detection compares the rule’s description, check, and fix text after stripping inline markup — cosmetic-only edits aren’t flagged.

Added rules 44

  • V-221558 Medium Firewall traversal from remote host must be disabled.
  • V-221559 Medium Site tracking users location must be disabled.
  • V-221561 Medium Sites ability to show pop-ups must be disabled.
  • V-221562 Medium Extensions installation must be blacklisted by default.
  • V-221563 Medium Extensions that are approved for use must be whitelisted.
  • V-221564 Medium The default search providers name must be set.
  • V-221565 Medium The default search provider URL must be set to perform encrypted searches.
  • V-221566 Medium Default search provider must be enabled.
  • V-221567 Medium The Password Manager must be disabled.
  • V-221568 High The running of outdated plugins must be disabled.
  • V-221570 Medium Background processing must be disabled.
  • V-221571 Medium Google Data Synchronization must be disabled.
  • V-221572 Medium The URL protocol schema javascript must be disabled.
  • V-221573 Medium Cloud print sharing must be disabled.
  • V-221574 Medium Network prediction must be disabled.
  • V-221575 Medium Metrics reporting to Google must be disabled.
  • V-221576 Medium Search suggestions must be disabled.
  • V-221577 Medium Importing of saved passwords must be disabled.
  • V-221578 Medium Incognito mode must be disabled.
  • V-221579 Medium Online revocation checks must be done.
  • V-221580 Medium Safe Browsing must be enabled,
  • V-221581 Medium Browser history must be saved.
  • V-221582 Medium Default behavior must block webpages from automatically running plugins.
  • V-221583 Medium Session only based cookies must be disabled.
  • V-221584 Medium The version of Google Chrome running on the system must be a supported version.
  • V-221585 Medium URLs must be whitelisted for plugin use
  • V-221586 Medium Deletion of browser history must be disabled.
  • V-221587 Medium Prompt for download location must be enabled.
  • V-221588 Medium Download restrictions must be configured.
  • V-221589 Medium Chrome must be configured to allow only TLS.
  • V-221590 Medium Safe Browsing Extended Reporting must be disabled.
  • V-221591 Medium WebUSB must be disabled.
  • V-221592 Medium Chrome Cleanup must be disabled.
  • V-221593 Medium Chrome Cleanup reporting must be disabled.
  • V-221594 Medium Google Cast must be disabled.
  • V-221595 Medium Autoplay must be disabled.
  • V-221596 Medium URLs must be whitelisted for Autoplay use.
  • V-221597 Medium Anonymized data collection must be disabled.
  • V-221598 Medium Collection of WebRTC event logs must be disabled.
  • V-221599 Low Chrome development tools must be disabled.
  • V-226401 Medium Guest Mode must be disabled.
  • V-226402 Medium AutoFill for credit cards must be disabled.
  • V-226403 Medium AutoFill for addresses must be disabled.
  • V-226404 Medium Import AutoFill form data must be disabled.

Removed rules 44

  • V-102867 Medium Guest Mode must be disabled.
  • V-102869 Medium AutoFill for credit cards must be disabled.
  • V-102871 Medium AutoFill for addresses must be disabled.
  • V-102873 Medium Import AutoFill form data must be disabled.
  • V-44711 Medium Firewall traversal from remote host must be disabled.
  • V-44719 Medium Sites ability to show pop-ups must be disabled.
  • V-44723 Medium Site tracking users location must be disabled.
  • V-44727 Medium Extensions installation must be blacklisted by default.
  • V-44729 Medium Extensions that are approved for use must be whitelisted.
  • V-44733 Medium The default search providers name must be set.
  • V-44735 Medium The default search provider URL must be set to perform encrypted searches.
  • V-44737 Medium Default search provider must be enabled.
  • V-44741 Medium The Password Manager must be disabled.
  • V-44745 High The running of outdated plugins must be disabled.
  • V-44753 Medium Background processing must be disabled.
  • V-44759 Medium Google Data Synchronization must be disabled.
  • V-44761 Medium The URL protocol schema javascript must be disabled.
  • V-44765 Medium Cloud print sharing must be disabled.
  • V-44769 Medium Network prediction must be disabled.
  • V-44771 Medium Metrics reporting to Google must be disabled.
  • V-44773 Medium Search suggestions must be disabled.
  • V-44775 Medium Importing of saved passwords must be disabled.
  • V-44777 Medium Incognito mode must be disabled.
  • V-44789 Medium Online revocation checks must be done.
  • V-44791 Medium Safe Browsing must be enabled,
  • V-44793 Medium Browser history must be saved.
  • V-44795 Medium Default behavior must block webpages from automatically running plugins.
  • V-44799 Medium Session only based cookies must be disabled.
  • V-44805 Medium The version of Google Chrome running on the system must be a supported version.
  • V-52795 Medium URLs must be whitelisted for plugin use
  • V-75165 Medium Deletion of browser history must be disabled.
  • V-79929 Medium Prompt for download location must be enabled.
  • V-79931 Medium Download restrictions must be configured.
  • V-81581 Medium Autoplay must be disabled.
  • V-81583 Medium Chrome must be configured to allow only TLS.
  • V-81585 Medium Safe Browsing Extended Reporting must be disabled.
  • V-81587 Medium WebUSB must be disabled.
  • V-81589 Medium URLs must be whitelisted for Autoplay use.
  • V-81591 Medium Chrome Cleanup must be disabled.
  • V-81593 Medium Chrome Cleanup reporting must be disabled.
  • V-81597 Medium Google Cast must be disabled.
  • V-91203 Medium Anonymized data collection must be disabled.
  • V-91205 Medium Collection of WebRTC event logs must be disabled.
  • V-97525 Low Chrome development tools must be disabled.
Sort by
b
Firewall traversal from remote host must be disabled.
AC-4 - Medium - CCI-001414 - V-221558 - SV-221558r508655_rule
RMF Control
AC-4
Severity
M
CCI
CCI-001414
Version
DTBC-0001
Vuln IDs
  • V-221558
  • V-44711
Rule IDs
  • SV-221558r508655_rule
  • SV-57545
Remote connections should never be allowed that bypass the firewall, as there is no way to verify if they can be trusted. Enables usage of STUN and relay servers when remote clients are trying to establish a connection to this machine. If this setting is enabled, then remote clients can discover and connect to this machine even if they are separated by a firewall. If this setting is disabled and outgoing UDP connections are filtered by the firewall, then this machine will only allow connections from client machines within the local network. If this policy is left not set the setting will be enabled.
Checks: C-23273r415801_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If RemoteAccessHostFirewallTraversal is not displayed under the Policy Name column or it is not set to false under the Policy Value column, then this is a finding. Windows registry: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the RemoteAccessHostFirewallTraversal value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23262r415802_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative\Templates\Google\Google Chrome\Configure remote access options Policy Name: Enable firewall traversal from remote access host Policy State: Disabled Policy Value: N/A

b
Site tracking users location must be disabled.
SC-18 - Medium - CCI-001166 - V-221559 - SV-221559r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0002
Vuln IDs
  • V-221559
  • V-44723
Rule IDs
  • SV-221559r508655_rule
  • SV-57557
Website tracking is the practice of gathering information as to which websites were accesses by a browser. The common method of doing this is to have a website create a tracking cookie on the browser. If the information of what sites are being accessed is made available to unauthorized persons, this violates confidentiality requirements, and over time poses a significant OPSEC issue. This policy setting allows you to set whether websites are allowed to track the user’s physical location. Tracking the user’s physical location can be allowed by default, denied by default or the user can be asked every time a website requests the physical location. 1 = Allow sites to track the user’s physical location 2 = Do not allow any site to track the user’s physical location 3 = Ask whenever a site wants to track the user’s physical location
Checks: C-23274r478199_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If DefaultGeolocationSetting is not displayed under the Policy Name column or it is not set to 2, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the DefaultGeolocationSetting value name does not exist or its value data is not set to 2, then this is a finding.

Fix: F-23263r478200_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Content Settings\ Policy Name: Default geolocation setting Policy State: Enabled Policy Value: Do not allow any site to track the users' physical location

b
Sites ability to show pop-ups must be disabled.
CM-7 - Medium - CCI-000381 - V-221561 - SV-221561r539433_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0004
Vuln IDs
  • V-221561
  • V-44719
Rule IDs
  • SV-221561r539433_rule
  • SV-57553
Chrome allows you to manage whether unwanted pop-up windows appear. Pop-up windows that are opened when the end user clicks a link are not blocked. If you enable this policy setting, most unwanted pop-up windows are prevented from appearing. If you disable this policy setting, pop-up windows are not prevented from appearing. If you disable this policy setting, scripts can continue to create pop-up windows, and pop-ups that hide other windows. Recommend configuring this setting to ‘2’ to help prevent malicious websites from controlling the pop-up windows or fooling users into clicking on the wrong window. If you do not configure this policy setting, most unwanted pop-up windows are prevented from appearing. If this policy is left not set, 'BlockPopups' will be used and the user will be able to change it. 1 = Allow all sites to show pop-ups 2 = Do not allow any site to show pop-ups
Checks: C-23276r539432_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If DefaultPopupsSetting is not displayed under the Policy Name column or it is not set to 2, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the value name DefaultPopupsSetting does not exist or its value data is not set to 2, then this is a finding. Note: If AO Approved exceptions to this rule have been enabled, this is not a finding.

Fix: F-23265r478203_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Content Settings\ Policy Name: Default popups setting Policy State: Enabled Policy Value: Do not allow any site to show popups

b
Extensions installation must be blacklisted by default.
AU-12 - Medium - CCI-000169 - V-221562 - SV-221562r508655_rule
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
DTBC-0005
Vuln IDs
  • V-221562
  • V-44727
Rule IDs
  • SV-221562r508655_rule
  • SV-57561
Extensions are developed by third party sources and are designed to extend Google Chrome's functionality. An extension can be made by anyone, to do and access almost anything on a system; this means they pose a high risk to any system that would allow all extensions to be installed by default. Allows you to specify which extensions the users can NOT install. Extensions already installed will be removed if blacklisted. A blacklist value of '*' means all extensions are blacklisted unless they are explicitly listed in the whitelist. If this policy is left not set the user can install any extension in Google Chrome.
Checks: C-23277r415813_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If ExtensionInstallBlacklist is not displayed under the Policy Name column or it is not set to * under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ExtensionInstallBlacklist 3. If the a registry value name of 1 does not exist under that key or its value is not set to *, then this is a finding.

Fix: F-23266r415814_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Extensions\ Policy Name: Configure extension installation blacklist Policy State: Enabled Policy Value: *

b
Extensions that are approved for use must be whitelisted.
SC-18 - Medium - CCI-001170 - V-221563 - SV-221563r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001170
Version
DTBC-0006
Vuln IDs
  • V-221563
  • V-44729
Rule IDs
  • SV-221563r508655_rule
  • SV-57563
The whitelist should only contain organizationally approved extensions. This is to prevent a user from accidently whitelisitng a malicious extension. This policy allows you to specify which extensions are not subject to the blacklist. A blacklist value of ‘*’ means all extensions are blacklisted and users can only install extensions listed in the whitelist. By default, no extensions are whitelisted. If all extensions have been blacklisted by policy, then the whitelist policy can be used to allow specific extensions to be installed. Administrators should determine which extensions should be allowed to be installed by their users. If no extensions are whitelisted, then no extensions can be installed when combined with blacklisting all extensions.
Checks: C-23278r415816_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If ExtensionInstallWhitelist is not displayed under the Policy Name column or it is not set to oiigbmnaadbkfbmpbfijlflahbdbdgdf or a list of administrator approved extension IDs, then this is a finding. Windows method: 1. Start regedit 2. Navigate to the key HKLM\Software\Policies\Google\Chrome\ExtensionInstallWhitelist 3. If the ExtensionInstallWhitelist key is not set to 1 or oiigbmnaadbkfbmpbfijlflahbdbdgdf or a list of administrator-approved extension IDs, then this is a finding.

Fix: F-23267r415817_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Extensions\ Policy Name: Configure extension installation whitelist Policy State: Enabled Policy Value: oiigbmnaadbkfbmpbfijlflahbdbdgdf (or 1) Note: oiigbmnaadbkfbmpbfijlflahbdbdgdf is the extension ID for scriptno(a commonly used Chrome extension)

b
The default search providers name must be set.
CM-7 - Medium - CCI-000381 - V-221564 - SV-221564r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0007
Vuln IDs
  • V-221564
  • V-44733
Rule IDs
  • SV-221564r508655_rule
  • SV-57567
Specifies the name of the default search provider that is to be used, if left empty or not set, the host name specified by the search URL will be used. This policy is only considered if the 'DefaultSearchProviderEnabled' policy is enabled. When doing internet searches it is important to use an encrypted connection via https.
Checks: C-23279r415819_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If DefaultSearchProviderName is displayed under the Policy Name column or it is not set to an organization approved encrypted search provider that corresponds to the encrypted search provider set in DTBC-0008(ex. Google Encrypted, Bing Encrypted) under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the DefaultSearchProviderName value name does not exist or it is not set to an organization approved encrypted search provider that corresponds to the encrypted search provider set in DTBC-0008(ex. Google Encrypted, Bing Encrypted), then this is a finding.

Fix: F-23268r415820_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Default search provider\ Policy Name: Default search provider name Policy State: Enabled Policy Value: set to an organization approved encrypted search provider that corresponds to the encrypted search provider set in DTBC-0008(ex. Google Encrypted, Bing Encrypted)

b
The default search provider URL must be set to perform encrypted searches.
CM-7 - Medium - CCI-000381 - V-221565 - SV-221565r539431_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0008
Vuln IDs
  • V-221565
  • V-44735
Rule IDs
  • SV-221565r539431_rule
  • SV-57569
Specifies the URL of the search engine used when doing a default search. The URL should contain the string '{searchTerms}', which will be replaced at query time by the terms the user is searching for. This option must be set when the 'DefaultSearchProviderEnabled' policy is enabled and will only be respected if this is the case. When doing internet searches it is important to use an encrypted connection via https.
Checks: C-23280r539429_chk

If the system is on the SIPRNet, this requirement is NA. Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If DefaultSearchProviderSearchURL is not displayed under the Policy Name column or it is not set to an organization-approved encrypted search string (ex. https://www.google.com/#q={searchTerms} or https://www.bing.com/search?q={searchTerms} ) under the Policy Value column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the DefaultSearchProviderSearchURL value name does not exist or its value data is not set to an organization-approved encrypted search string (ex. https://www.google.com/search?q={searchTerms} or https://www.bing.com/search?q={searchTerms} ) this is a finding.

Fix: F-23269r539430_fix

If the system is on the SIPRNet, this requirement is NA. Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Default search provider\ Policy Name: Default search provider search URL Policy State: Enabled Policy Value: Must be set to an organization-approved encrypted search string (ex. https://www.google.com/search?q={searchTerms} or https://www.bing.com/search?q={searchTerms} )

b
Default search provider must be enabled.
CM-7 - Medium - CCI-000381 - V-221566 - SV-221566r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0009
Vuln IDs
  • V-221566
  • V-44737
Rule IDs
  • SV-221566r508655_rule
  • SV-57571
Policy enables the use of a default search provider. If you enable this setting, a default search is performed when the user types text in the omnibox that is not a URL. You can specify the default search provider to be used by setting the rest of the default search policies. If these are left empty, the user can choose the default provider. If you disable this setting, no search is performed when the user enters non-URL text in the omnibox. If you enable or disable this setting, users cannot change or override this setting in Google Chrome. If this policy is left not set, the default search provider is enabled, and the user will be able to set the search provider list.
Checks: C-23281r415825_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If DefaultSearchProviderEnabled is not displayed under the Policy Name column or it is not set to true under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the DefaultSearchProviderEnabled value name does not exist or its value data is not set to 1, then this is a finding. Note: This policy will only display in the chrome://policy tab on domain joined systems. On standalone systems, the policy will not display.

Fix: F-23270r415826_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Default search provider\ Policy Name: Enable the default search provider Policy State: Enabled Policy Value: N/A

b
The Password Manager must be disabled.
CM-7 - Medium - CCI-000381 - V-221567 - SV-221567r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0011
Vuln IDs
  • V-221567
  • V-44741
Rule IDs
  • SV-221567r508655_rule
  • SV-57575
Enables saving passwords and using saved passwords in Google Chrome. Malicious sites may take advantage of this feature by using hidden fields gain access to the stored information. If you enable this setting, users can have Google Chrome memorize passwords and provide them automatically the next time they log in to a site. If you disable this setting, users are not able to save passwords or use already saved passwords. If you enable or disable this setting, users cannot change or override this setting in Google Chrome. If this policy is left not set, this will be enabled but the user will be able to change it. ListPassword manager should not be used as it stores passwords locally.
Checks: C-23282r415828_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If PasswordManagerEnabled is not displayed under the Policy Name column or it is not set to false under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the PasswordManagerEnabled value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23271r415829_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Password Manager\ Policy Name: Enable Saving Passwords to the Password Manager Policy State: Disabled Policy Value: N/A

c
The running of outdated plugins must be disabled.
SI-3 - High - CCI-001240 - V-221568 - SV-221568r508655_rule
RMF Control
SI-3
Severity
H
CCI
CCI-001240
Version
DTBC-0013
Vuln IDs
  • V-221568
  • V-44745
Rule IDs
  • SV-221568r508655_rule
  • SV-57579
Running outdated plugins could lead to system compromise through the use of known exploits. Having plugins that updated to the most current version ensures the smallest attack surfuce possible. If you enable this setting, outdated plugins are used as normal plugins. If you disable this setting, outdated plugins will not be used and users will not be asked for permission to run them. If this setting is not set, users will be asked for permission to run outdated plugins.
Checks: C-23283r415831_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If AllowOutdatedPlugins is not displayed under the Policy Name column or it is not set to false under the Policy Name column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome 3. If the AllowOutdatedPlugins value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23272r415832_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Allow running plugins that are outdated Policy State: Disabled Policy Value: N/A

b
Background processing must be disabled.
SC-18 - Medium - CCI-001695 - V-221570 - SV-221570r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001695
Version
DTBC-0017
Vuln IDs
  • V-221570
  • V-44753
Rule IDs
  • SV-221570r508655_rule
  • SV-57587
Determines whether a Google Chrome process is started on OS login that keeps running when the last browser window is closed, allowing background apps to remain active. The background process displays an icon in the system tray and can always be closed from there. If this policy is set to True, background mode is enabled and cannot be controlled by the user in the browser settings. If this policy is set to False, background mode is disabled and cannot be controlled by the user in the browser settings. If this policy is left unset, background mode is initially disabled and can be controlled by the user in the browser settings.' - Google Chrome Administrators Policy ListThis setting, if enabled, allows Google Chrome to run at all times. There is two reasons that this is not wanted. First, it can tie up system resources that might otherwise be needed. Second, it does not make it obvious to the user that it is running and poorly written extensions could cause instability on the system.
Checks: C-23285r415837_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If BackgroundModeEnabled is not displayed under the Policy Name column and it is not set to false under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the BackgroundModeEnabled value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23274r415838_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Continue running background apps when Google Chrome is closed Policy State: Disabled Policy Value: N/A

b
Google Data Synchronization must be disabled.
AC-4 - Medium - CCI-001374 - V-221571 - SV-221571r508655_rule
RMF Control
AC-4
Severity
M
CCI
CCI-001374
Version
DTBC-0020
Vuln IDs
  • V-221571
  • V-44759
Rule IDs
  • SV-221571r508655_rule
  • SV-57593
Disables data synchronization in Google Chrome using Google-hosted synchronization services and prevents users from changing this setting. If you enable this setting, users cannot change or override this setting in Google Chrome. If this policy is left not set the user will be able to enable Google Sync. Google Sync is used to sync information between different user devices, this data is then stored on Google owned servers. The synced data may consist of information such as email, calendars, viewing history, etc. This feature must be disabled because the organization does not have control over the servers the data is stored on.
Checks: C-23286r415840_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If SyncDisabled is not displayed under the Policy Name column or it is not set to true under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the SyncDisabled value name does not exist or its value data is not set to 1, then this is a finding.

Fix: F-23275r415841_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Disable synchronization of data with Google Policy State: Enabled Policy Value: N/A

b
The URL protocol schema javascript must be disabled.
CM-7 - Medium - CCI-000381 - V-221572 - SV-221572r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0021
Vuln IDs
  • V-221572
  • V-44761
Rule IDs
  • SV-221572r508655_rule
  • SV-57595
Each access to a URL is handled by the browser according to the URL's "scheme". The "scheme" of a URL is the section before the ":". The term "protocol" is often mistakenly used for a "scheme". The difference is that the scheme is how the browser handles a URL and the protocol is how the browser communicates with a service. If a scheme or its associated protocol used by a browser is insecure or obsolete, vulnerabilities can be exploited resulting in exposed data or unrestricted access to the browser's system. The browser must be configured to disable the use of insecure and obsolete schemas (protocols). This policy disables the listed protocol schemes in Google Chrome, URLs using a scheme from this list will not load and cannot be navigated to. If this policy is left not set or the list is empty all schemes will be accessible in Google Chrome.
Checks: C-23287r478205_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If URLBlacklist is not displayed under the Policy Name column or it is not set to javascript://* under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\URLBlacklist 3. If the URLBlacklist key does not exist, or the does not contain entries 1 set to javascript://*, then this is a finding.

Fix: F-23276r478206_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Block access to a list of URLs Policy State: Enabled Policy Value 1: javascript://*

b
Cloud print sharing must be disabled.
AC-4 - Medium - CCI-001374 - V-221573 - SV-221573r508655_rule
RMF Control
AC-4
Severity
M
CCI
CCI-001374
Version
DTBC-0023
Vuln IDs
  • V-221573
  • V-44765
Rule IDs
  • SV-221573r508655_rule
  • SV-57599
Policy enables Google Chrome to act as a proxy between Google Cloud Print and legacy printers connected to the machine. If this setting is enabled or not configured, users can enable the cloud print proxy by authentication with their Google account. If this setting is disabled, users cannot enable the proxy, and the machine will not be allowed to share it’s printers with Google Cloud Print. If this policy is not set, this will be enabled but the user will be able to change it.
Checks: C-23288r478208_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If CloudPrintProxyEnabled is not displayed under the Policy Name column or it is not set to false under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the CloudPrintProxyEnabled value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23277r478209_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable Google Cloud Print proxy Policy State: Disabled Policy Value: N/A

b
Network prediction must be disabled.
CM-6 - Medium - CCI-000366 - V-221574 - SV-221574r508655_rule
RMF Control
CM-6
Severity
M
CCI
CCI-000366
Version
DTBC-0025
Vuln IDs
  • V-221574
  • V-44769
Rule IDs
  • SV-221574r508655_rule
  • SV-57603
Enables network prediction in Google Chrome and prevents users from changing this setting. If you enable or disable this setting, users cannot change or override this setting in Google Chrome. If this policy is left not set, this will be disabled but the user will be able to change it.
Checks: C-23289r415849_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "NetworkPredictionOptions" is not displayed under the “Policy Name” column or it is not set to "2" under the “Policy Value” column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "NetworkPredictionOptions" value name does not exist or its value data is not set to "2," this is a finding.

Fix: F-23278r415850_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable network prediction Policy State: Enabled Policy Value: Do not predict network actions on any network connection

b
Metrics reporting to Google must be disabled.
CM-7 - Medium - CCI-000381 - V-221575 - SV-221575r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0026
Vuln IDs
  • V-221575
  • V-44771
Rule IDs
  • SV-221575r508655_rule
  • SV-57605
Enables anonymous reporting of usage and crash-related data about Google Chrome to Google and prevents users from changing this setting. If you enable this setting, anonymous reporting of usage and crash-related data is sent to Google. A crash report could contain sensitive information from the computer's memory. If you disable this setting, anonymous reporting of usage and crash-related data is never sent to Google. If you enable or disable this setting, users cannot change or override this setting in Google Chrome. If this policy is left not set the setting will be what the user chose upon installation / first run.
Checks: C-23290r415852_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If MetricsReportingEnabled is not displayed under the Policy Name column or it is not set to false under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the MetricsReportingEnabled value name does not exist or its value data is not set to 0, then this is a finding. Note: This policy will only display in the chrome://policy tab on domain joined systems. On standalone systems, the policy will not display.

Fix: F-23279r415853_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable reporting of usage and crash-related data Policy State: Disabled Policy Value: N/A

b
Search suggestions must be disabled.
CM-7 - Medium - CCI-000381 - V-221576 - SV-221576r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0027
Vuln IDs
  • V-221576
  • V-44773
Rule IDs
  • SV-221576r508655_rule
  • SV-57607
Search suggestion should be disabled as it could lead to searches being conducted that were never intended to be made. Enables search suggestions in Google Chrome's omnibox and prevents users from changing this setting. If you enable this setting, search suggestions are used. If you disable this setting, search suggestions are never used. If you enable or disable this setting, users cannot change or override this setting in Google Chrome. If this policy is left not set, this will be enabled but the user will be able to change it.
Checks: C-23291r415855_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If SearchSuggestEnabled is not displayed under the Policy Name column or it is not set to false under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the SearchSuggestEnabled value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23280r415856_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable search suggestions Policy State: Disabled Policy Value: N/A

b
Importing of saved passwords must be disabled.
CM-7 - Medium - CCI-000381 - V-221577 - SV-221577r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0029
Vuln IDs
  • V-221577
  • V-44775
Rule IDs
  • SV-221577r508655_rule
  • SV-57609
Importing of saved passwords should be disabled as it could lead to unencrypted account passwords stored on the system from another browser to be viewed. This policy forces the saved passwords to be imported from the previous default browser if enabled. If enabled, this policy also affects the import dialog. If disabled, the saved passwords are not imported. If it is not set, the user may be asked whether to import, or importing may happen automatically.
Checks: C-23292r415858_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If ImportSavedPasswords is not displayed under the Policy Name column or it is not set to false under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the ImportSavedPasswords value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23281r415859_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Import saved passwords from default browser on first run Policy State: Disabled Policy Value: N/A

b
Incognito mode must be disabled.
AU-10 - Medium - CCI-000166 - V-221578 - SV-221578r508655_rule
RMF Control
AU-10
Severity
M
CCI
CCI-000166
Version
DTBC-0030
Vuln IDs
  • V-221578
  • V-44777
Rule IDs
  • SV-221578r508655_rule
  • SV-57611
Incognito mode allows the user to browse the Internet without recording their browsing history/activity. From a forensics perspective, this is unacceptable. Best practice requires that browser history is retained. The "IncognitoModeAvailability" setting controls whether the user may utilize Incognito mode in Google Chrome. If 'Enabled' is selected or the policy is left unset, pages may be opened in Incognito mode. If 'Disabled' is selected, pages may not be opened in Incognito mode. If 'Forced' is selected, pages may be opened ONLY in Incognito mode. 0 = Incognito mode available. 1 = Incognito mode disabled. 2 = Incognito mode forced.
Checks: C-23293r415861_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If IncognitoModeAvailability is not displayed under the Policy Name column or it is not set to 1 under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the IncognitoModeAvailability value name does not exist or its value data is not set to 1, then this is a finding.

Fix: F-23282r415862_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Incognito mode availability Policy State: Enabled Policy Value: Incognito mode disabled

b
Online revocation checks must be done.
IA-5 - Medium - CCI-000185 - V-221579 - SV-221579r508655_rule
RMF Control
IA-5
Severity
M
CCI
CCI-000185
Version
DTBC-0037
Vuln IDs
  • V-221579
  • V-44789
Rule IDs
  • SV-221579r508655_rule
  • SV-57623
By setting this policy to true, the previous behavior is restored and online OCSP/CRL checks will be performed. If the policy is not set, or is set to false, then Chrome will not perform online revocation checks. Certificates are revoked when they have been compromised or are no longer valid, and this option protects users from submitting confidential data to a site that may be fraudulent or not secure.
Checks: C-23294r415864_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If EnableOnlineRevocationChecks is not displayed under the Policy Name column or it is not set to true under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the EnableOnlineRevocationChecks value name does not exist or its value data is not set to 1, then this is a finding.

Fix: F-23283r415865_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Whether online OCSP/CRL checks are performed Policy State: Enabled Policy Value: N/A

b
Safe Browsing must be enabled,
SC-18 - Medium - CCI-001166 - V-221580 - SV-221580r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0038
Vuln IDs
  • V-221580
  • V-44791
Rule IDs
  • SV-221580r508655_rule
  • SV-57625
Enables Google Chrome's Safe Browsing feature and prevents users from changing this setting. If you enable this setting, Safe Browsing is always active. If you disable this setting, Safe Browsing is never active. If you enable or disable this setting, users cannot change or override this setting in Google Chrome. If this policy is left not set, this will be enabled but the user will be able to change it. Safe browsing uses a signature database to test sites when they are be loaded to ensure they don't contain any known malware.
Checks: C-23295r415867_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If SafeBrowsingEnabled is not displayed under the Policy Name column or it is not set to true under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the SafeBrowsingEnabled value name does not exist or its value data is not set to 1, then this is a finding.

Fix: F-23284r415868_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Safe Browsing Settings Policy Name: Enable Safe Browsing Policy State: Enabled Policy Value: N/A

b
Browser history must be saved.
SC-28 - Medium - CCI-001199 - V-221581 - SV-221581r508655_rule
RMF Control
SC-28
Severity
M
CCI
CCI-001199
Version
DTBC-0039
Vuln IDs
  • V-221581
  • V-44793
Rule IDs
  • SV-221581r508655_rule
  • SV-57627
This policy disables saving browser history in Google Chrome and prevents users from changing this setting. If this setting is enabled, browsing history is not saved. If this setting is disabled or not set, browsing history is saved.
Checks: C-23296r415870_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If the policy 'SavingBrowserHistoryDisabled' is not shown or is not set to false, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the SavingBrowserHistoryDisabled value name does not exist or its value data is not set to 0, then this is a finding.

Fix: F-23285r415871_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Disable saving browser history Policy State: Disabled Policy Value: N/A

b
Default behavior must block webpages from automatically running plugins.
AU-12 - Medium - CCI-000169 - V-221582 - SV-221582r508655_rule
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
DTBC-0040
Vuln IDs
  • V-221582
  • V-44795
Rule IDs
  • SV-221582r508655_rule
  • SV-57629
This policy allows you to set whether websites are allowed to automatically run the Flash plugin. Automatically running the Flash plugin can be either allowed for all websites or denied for all websites. If this policy is left not set, the user will be able to change this setting manually. 1 = Allow all sites to automatically run Flash plugin 2 = Block the Flash plugin 3 = Click to play
Checks: C-23297r415873_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If the policy "DefaultPluginsSetting" is not shown or is not set to "3", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\DefaultPluginsSetting 3. If this key "DefaultPluginsSetting" does not exist or is not set to "3", this is a finding.

Fix: F-23286r415874_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Content Settings\ Policy Name: Default Flash setting Policy State: Enabled Policy Value: Click to play

b
Session only based cookies must be disabled.
AU-10 - Medium - CCI-000166 - V-221583 - SV-221583r508655_rule
RMF Control
AU-10
Severity
M
CCI
CCI-000166
Version
DTBC-0045
Vuln IDs
  • V-221583
  • V-44799
Rule IDs
  • SV-221583r508655_rule
  • SV-57633
Policy allows you to set a list of URL patterns that specify sites which are allowed to set session only cookies. If this policy is left not set the global default value will be used for all sites either from the 'DefaultCookiesSetting' policy if it is set, or the user's personal configuration otherwise. If the 'RestoreOnStartup' policy is set to restore URLs from previous sessions this policy will not be respected and cookies will be stored permanently for those sites.
Checks: C-23298r415876_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If the policy ”CookiesSessionOnlyForUrls” exists, and has any defined values, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\CookiesSessionOnlyForUrls 3. If this key exists and has any defined values, this is a finding.

Fix: F-23287r415877_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Content Settings Policy Name: Allow session only cookies on these sites Policy State: Disabled Policy Value: N/A

b
The version of Google Chrome running on the system must be a supported version.
SI-2 - Medium - CCI-002605 - V-221584 - SV-221584r508655_rule
RMF Control
SI-2
Severity
M
CCI
CCI-002605
Version
DTBC-0050
Vuln IDs
  • V-221584
  • V-44805
Rule IDs
  • SV-221584r508655_rule
  • SV-57639
Google Chrome is being continually updated by the vendor in order to address identified security vulnerabilities. Running an older version of the browser can introduce security vulnerabilities to the system.
Checks: C-23299r415879_chk

Universal method: 1. In the omnibox (address bar) type chrome://settings/help 2. Cross-reference the build information displayed with the Google Chrome site to identify, at minimum, the oldest supported build available. As of July 2019, this is 74.x.x. 3. If the installed version of Chrome is not supported by Google, this is a finding.

Fix: F-23288r415880_fix

Install a supported version of Google Chrome.

b
URLs must be whitelisted for plugin use
CM-7 - Medium - CCI-000381 - V-221585 - SV-221585r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0051
Vuln IDs
  • V-221585
  • V-52795
Rule IDs
  • SV-221585r508655_rule
  • SV-67011
This policy allows you to set a list of URL patterns that specify sites which are allowed to run the Flash plugin. If this policy is left not set, the global default value will be used for all sites either from the "DefaultPluginsSetting" policy if it is set, or the user’s personal configuration otherwise.
Checks: C-23300r415882_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If PluginsAllowedForUrls is not displayed under the Policy Name column or it is not set to a list of administrator approved URLs under the Policy Value column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the PluginsAllowedForUrls key does not exist and it does not contain a list of administrator approved URLs then this is a finding. Suggested: the set or subset of [*.]mil and [*.]gov

Fix: F-23289r415883_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Content Settings Policy Name: Allow the Flash plugin on these sites Policy State: Enabled Policy Value 1: [*.]mil Policy Value 2: [*.]gov

b
Deletion of browser history must be disabled.
AU-12 - Medium - CCI-000169 - V-221586 - SV-221586r508655_rule
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
DTBC-0052
Vuln IDs
  • V-221586
  • V-75165
Rule IDs
  • SV-221586r508655_rule
  • SV-89845
Disabling this function will prevent users from deleting their browsing history, which could be used to identify malicious websites and files that could later be used for anti-virus and Intrusion Detection System (IDS) signatures. Furthermore, preventing users from deleting browsing history could be used to identify abusive web surfing on government systems.
Checks: C-23301r415885_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If the policy "AllowDeletingBrowserHistory" is not shown or is not set to false, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "AllowDeletingBrowserHistory" value name does not exist or its value data is not set to "0", this is a finding.

Fix: F-23290r415886_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable deleting browser and download history Policy State: Disabled Policy Value: N/A

b
Prompt for download location must be enabled.
AU-12 - Medium - CCI-000169 - V-221587 - SV-221587r508655_rule
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
DTBC-0053
Vuln IDs
  • V-221587
  • V-79929
Rule IDs
  • SV-221587r508655_rule
  • SV-94633
If the policy is enabled, the user will be asked where to save each file before downloading. If the policy is disabled, downloads will start immediately, and the user will not be asked where to save the file. If the policy is not configured, the user will be able to change this setting.
Checks: C-23302r415888_chk

Universal method: 1. In the omnibox (address bar) type chrome:// policy 2. If "PromptForDownloadLocation" is not displayed under the "Policy Name" column or it is not set to "true" under the "Policy Value" column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "PromptForDownloadLocation" value name does not exist or its value data is not set to "1", this is a finding.

Fix: F-23291r415889_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Ask where to save each file before downloading Policy State: Enabled Policy Value: N/A

b
Download restrictions must be configured.
AU-12 - Medium - CCI-000169 - V-221588 - SV-221588r508655_rule
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
DTBC-0055
Vuln IDs
  • V-221588
  • V-79931
Rule IDs
  • SV-221588r508655_rule
  • SV-94635
Configure the type of downloads that Google Chrome will completely block, without letting users override the security decision. If you set this policy, Google Chrome will prevent certain types of downloads, and will not let user bypass the security warnings. When the "Block dangerous downloads" option is chosen, all downloads are allowed, except for those that carry SafeBrowsing warnings. When the "Block potentially dangerous downloads" option is chosen, all downloads allowed, except for those that carry SafeBrowsing warnings of potentially dangerous downloads. When the "Block all downloads" option is chosen, all downloads are blocked. When this policy is not set, (or the "No special restrictions" option is chosen), the downloads will go through the usual security restrictions based on SafeBrowsing analysis results. Note that these restrictions apply to downloads triggered from web page content, as well as the 'download link...' context menu option. These restrictions do not apply to the save / download of the currently displayed page, nor does it apply to saving as PDF from the printing options. See https://developers.google.com/safe-browsing for more info on SafeBrowsing. 0 = No special restrictions 1 = Block dangerous downloads 2 = Block potentially dangerous downloads 3 = Block all downloads
Checks: C-23303r415891_chk

If the system is on the SIPRNet, this requirement is NA. Universal method: 1. In the omnibox (address bar) type chrome:// policy 2. If "DownloadRestrictions" is not displayed under the "Policy Name" column or it is not set to "1" or "2" under the "Policy Value" column, then this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "DownloadRestrictions" value name does not exist or its value data is not set to "1" or "2", then this is a finding.

Fix: F-23292r415892_fix

If the system is on the SIPRNet, this requirement is NA. Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Allow download restrictions Policy State: 1 or 2 Policy Value: N/A

b
Chrome must be configured to allow only TLS.
SC-13 - Medium - CCI-002450 - V-221589 - SV-221589r508655_rule
RMF Control
SC-13
Severity
M
CCI
CCI-002450
Version
DTBC-0056
Vuln IDs
  • V-221589
  • V-81583
Rule IDs
  • SV-221589r508655_rule
  • SV-96297
If this policy is not configured then Google Chrome uses a default minimum version, which is TLS 1.0. Otherwise, it may be set to one of the following values: "tls1", "tls1.1" or "tls1.2". When set, Google Chrome will not use SSL/TLS versions less than the specified version. An unrecognized value will be ignored. "tls1" = TLS 1.0 "tls1.1" = TLS 1.1 "tls1.2" = TLS 1.2
Checks: C-23304r478211_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "SSLVersionMin" is not displayed under the "Policy Name" column or it is not set to "tls1.1", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "SSLVersionMin" value name does not exist or its value data is not set to "tls1.1", this is a finding.

Fix: F-23293r478212_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc. 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Minimum SSL version enabled Policy State: Enabled Policy Value: TLS 1.1

b
Safe Browsing Extended Reporting must be disabled.
SC-18 - Medium - CCI-001166 - V-221590 - SV-221590r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0057
Vuln IDs
  • V-221590
  • V-81585
Rule IDs
  • SV-221590r508655_rule
  • SV-96299
Enables Google Chrome's Safe Browsing Extended Reporting and prevents users from changing this setting. Extended Reporting sends some system information and page content to Google servers to help detect dangerous apps and sites. If the setting is set to "True", then reports will be created and sent whenever necessary (such as when a security interstitial is shown). If the setting is set to "False", reports will never be sent. If this policy is set to "True" or "False", the user will not be able to modify the setting. If this policy is left unset, the user will be able to change the setting and decide whether to send reports or not.
Checks: C-23305r415897_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "SafeBrowsingExtendedReportingEnabled" is not displayed under the "Policy Name" column or it is not set to "False", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "SafeBrowsingExtendedReportingEnabled" value name does not exist or its value data is not set to "0", this is a finding.

Fix: F-23294r415898_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Safe Browsing settings\ Policy Name: Enable Safe Browsing Extended Reporting Policy State: Disabled Policy Value: N/A

b
WebUSB must be disabled.
CM-7 - Medium - CCI-000381 - V-221591 - SV-221591r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0058
Vuln IDs
  • V-221591
  • V-81587
Rule IDs
  • SV-221591r508655_rule
  • SV-96301
Allows you to set whether websites are allowed to get access to connected USB devices. Access can be completely blocked, or the user can be asked every time a website wants to get access to connected USB devices. If this policy is left not set, ”3” will be used, and the user will be able to change it. 2 = Do not allow any site to request access to USB devices via the WebUSB API 3 = Allow sites to ask the user to grant access to a connected USB device
Checks: C-23306r415900_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "DefaultWebUsbGuardSetting" is not displayed under the "Policy Name" column or it is not set to "2", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "DefaultWebUsbGuardSetting" value name does not exist or its value data is not set to "2", this is a finding.

Fix: F-23295r415901_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Content Settings Policy Name: Control use of the WebUSB API Policy State: Enabled Policy Value: 2

b
Chrome Cleanup must be disabled.
AU-12 - Medium - CCI-000169 - V-221592 - SV-221592r508655_rule
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
DTBC-0060
Vuln IDs
  • V-221592
  • V-81591
Rule IDs
  • SV-221592r508655_rule
  • SV-96305
If set to “False”, prevents Chrome Cleanup from scanning the system for unwanted software and performing cleanups. Manually triggering Chrome Cleanup from chrome://settings/cleanup is disabled. If set to “True” or unset, Chrome Cleanup periodically scans the system for unwanted software and should any be found, will ask the user if they wish to remove it. Manually triggering Chrome Cleanup from chrome://settings is enabled. This policy is available only on Windows instances that are joined to a Microsoft Active Directory domain.
Checks: C-23307r415903_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "ChromeCleanupEnabled" is not displayed under the "Policy Name" column or it is not set to "False", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "ChromeCleanupEnabled" value name does not exist or its value data is not set to "0", this is a finding.

Fix: F-23296r415904_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome Policy Name: Enables Chrome Cleanup on Windows Policy State: Disabled Policy Value: N/A

b
Chrome Cleanup reporting must be disabled.
AU-12 - Medium - CCI-000169 - V-221593 - SV-221593r508655_rule
RMF Control
AU-12
Severity
M
CCI
CCI-000169
Version
DTBC-0061
Vuln IDs
  • V-221593
  • V-81593
Rule IDs
  • SV-221593r508655_rule
  • SV-96307
If unset, should Chrome Cleanup detect unwanted software, it may report metadata about the scan to Google in accordance with policy set by “SafeBrowsingExtendedReportingEnabled”. Chrome Cleanup will then ask the user if they wish to clean up the unwanted software. The user can choose to share results of the cleanup with Google to assist with future unwanted software detection. These results contain file metadata and registry keys as described by the Chrome Privacy Whitepaper. If set to “false”, should Chrome Cleanup detect unwanted software, it will not report metadata about the scan to Google, overriding any policy set by “SafeBrowsingExtendedReportingEnabled”. Chrome Cleanup will ask the user if they wish to clean up the unwanted software. Results of the cleanup will not be reported to Google and the user will not have the option to do so. If set to “true”, should Chrome Cleanup detect unwanted software, it may report metadata about the scan to Google in accordance with policy set by “SafeBrowsingExtendedReportingEnabled”. Chrome Cleanup will ask the user if they wish to clean up the unwanted software. Results of the cleanup will be reported to Google and the user will not have the option to prevent it. This policy is available only on Windows instances that are joined to a Microsoft Active Directory domain.
Checks: C-23308r415906_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "ChromeCleanupReportingEnabled" is not displayed under the "Policy Name" column or it is not set to "False", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "ChromeCleanupReportingEnabled" value name does not exist or its value data is not set to "0", this is a finding.

Fix: F-23297r415907_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome Policy Name: Control how Chrome Cleanup reports data to Google Policy State: Disabled Policy Value: N/A

b
Google Cast must be disabled.
CM-7 - Medium - CCI-000381 - V-221594 - SV-221594r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0063
Vuln IDs
  • V-221594
  • V-81597
Rule IDs
  • SV-221594r508655_rule
  • SV-96311
If this policy is set to ”True” or is not set, Google Cast will be enabled, and users will be able to launch it from the app menu, page context menus, media controls on Cast-enabled websites, and (if shown) the “Cast toolbar” icon. If this policy set to ”False”, Google Cast will be disabled.
Checks: C-23309r415909_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "EnableMediaRouter" is not displayed under the "Policy Name" column or it is not set to "False", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "EnableMediaRouter" value name does not exist or its value data is not set to "0", this is a finding.

Fix: F-23298r415910_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Google Cast Policy Name: Enable Google Cast Policy State: Disabled Policy Value: N/A

b
Autoplay must be disabled.
CM-7 - Medium - CCI-000381 - V-221595 - SV-221595r508655_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
DTBC-0064
Vuln IDs
  • V-221595
  • V-81581
Rule IDs
  • SV-221595r508655_rule
  • SV-96295
Allows you to control if videos can play automatically (without user consent) with audio content in Google Chrome. If the policy is set to “True”, Google Chrome is allowed to autoplay media. If the policy is set to “False”, Google Chrome is not allowed to autoplay media. The “AutoplayWhitelist” policy can be used to override this for certain URL patterns. By default, Google Chrome is not allowed to autoplay media. The “AutoplayWhitelist” policy can be used to override this for certain URL patterns.
Checks: C-23310r415912_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "AutoplayAllowed" is not displayed under the "Policy Name" column or it is not set to "False", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "AutoplayAllowed" value name does not exist or its value data is not set to "0", this is a finding.

Fix: F-23299r415913_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Allow media autoplay Policy State: Disabled Policy Value: N/A

b
URLs must be whitelisted for Autoplay use.
SC-18 - Medium - CCI-001170 - V-221596 - SV-221596r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001170
Version
DTBC-0065
Vuln IDs
  • V-221596
  • V-81589
Rule IDs
  • SV-221596r508655_rule
  • SV-96303
Controls the whitelist of URL patterns that autoplay will always be enabled on. If the “AutoplayAllowed” policy is set to “True” then this policy will have no effect. If the “AutoplayAllowed” policy is set to “False” then any URL patterns set in this policy will still be allowed to play.
Checks: C-23311r415915_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If “AutoplayWhitelist” is not displayed under the “Policy Name” column or it is not set to a list of administrator-approved URLs under the “Policy Value” column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the “AutoplayWhitelist” key does not exist and it does not contain a list of administrator-approved URLs, this is a finding. Suggested: the set or subset of [*.]mil and [*.]gov

Fix: F-23300r415916_fix

Windows group policy: 1. Open the “group policy editor” tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome Policy Name: Allow media autoplay on a whitelist of URL patterns Policy State: Enabled Policy Value 1: [*.]mil Policy Value 2: [*.]gov

b
Anonymized data collection must be disabled.
SC-18 - Medium - CCI-001166 - V-221597 - SV-221597r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0066
Vuln IDs
  • V-221597
  • V-91203
Rule IDs
  • SV-221597r508655_rule
  • SV-101303
Enable URL-keyed anonymized data collection in Google Chrome and prevent users from changing this setting. URL-keyed anonymized data collection sends URLs of pages the user visits to Google to make searches and browsing better. If you enable this policy, URL-keyed anonymized data collection is always active. If you disable this policy, URL-keyed anonymized data collection is never active. If this policy is left not set, URL-keyed anonymized data collection will be enabled but the user will be able to change it.
Checks: C-23312r415918_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "UrlKeyedAnonymizedDataCollectionEnabled" is not displayed under the “Policy Name” column or it is not set to "0" under the “Policy Value” column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the “UrlKeyedAnonymizedDataCollectionEnabled" value name does not exist or its value data is not set to "0," this is a finding.

Fix: F-23301r415919_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable URL-keyed anonymized data collection Policy State: Disabled Policy Value: NA

b
Collection of WebRTC event logs must be disabled.
SC-18 - Medium - CCI-001166 - V-221598 - SV-221598r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0067
Vuln IDs
  • V-221598
  • V-91205
Rule IDs
  • SV-221598r508655_rule
  • SV-101305
If the policy is set to “true”, Google Chrome is allowed to collect WebRTC event logs from Google services (e.g., Google Meet), and upload those logs to Google. If the policy is set to “false”, or is unset, Google Chrome may not collect nor upload such logs. These logs contain diagnostic information helpful when debugging issues with audio or video calls in Chrome, such as the time and size of sent and received RTP packets, feedback about congestion on the network, and metadata about time and quality of audio and video frames. These logs do not contain audio or video contents from the call. This data collection by Chrome can only be triggered by Google's web services, such as Google Hangouts or Google Meet.
Checks: C-23313r415921_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If "WebRtcEventLogCollectionAllowed" is not displayed under the “Policy Name” column or it is not set to "0" under the “Policy Value” column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the "WebRtcEventLogCollectionAllowed" value name does not exist or its value data is not set to "0," this is a finding.

Fix: F-23302r415922_fix

Windows group policy: 1. Open the group policy editor tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Allow collection of WebRTC event logs from Google services Policy State: Disabled Policy Value: NA

a
Chrome development tools must be disabled.
SI-11 - Low - CCI-001312 - V-221599 - SV-221599r508655_rule
RMF Control
SI-11
Severity
L
CCI
CCI-001312
Version
DTBC-0068
Vuln IDs
  • V-221599
  • V-97525
Rule IDs
  • SV-221599r508655_rule
  • SV-106629
While the risk associated with browser development tools is more related to the proper design of a web application, a risk vector remains within the browser. The developer tools allow end users and application developers to view and edit all types of web application related data via the browser. Page elements, source code, javascript, API calls, application data, etc. may all be viewed and potentially manipulated. Manipulation could be useful for troubleshooting legitimate issues, and this may be performed in a development environment. Manipulation could also be malicious and must be addressed.
Checks: C-23314r478214_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If the policy "DeveloperToolsAvailability" is not shown or is not set to "2", this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the key "DeveloperToolsAvailability" does not exist or is not set to "2", this is a finding.

Fix: F-23303r478215_fix

Windows group policy: 1. Open the "group policy editor" tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome Policy Name: Control where Developer Tools can be used Policy State: Enabled Policy Value: Disallow usage of the Developer Tools

b
Guest Mode must be disabled.
SC-18 - Medium - CCI-001166 - V-226401 - SV-226401r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0069
Vuln IDs
  • V-226401
  • V-102867
Rule IDs
  • SV-226401r508655_rule
  • SV-111829
If this policy is set to true or not configured, Google Chrome will enable guest logins. Guest logins are Google Chrome profiles where all windows are in incognito mode. If this policy is set to false, Google Chrome will not allow guest profiles to be started.
Checks: C-28109r478217_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If BrowserGuestModeEnabled is not displayed under the Policy Name column or it is not set to 0 under the Policy Value column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the BrowserGuestModeEnabled value name does not exist or its value data is not set to 0, this is a finding.

Fix: F-28097r478218_fix

Windows group policy: 1. Open the "group policy editor" tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable guest mode in browser Policy State: Disabled

b
AutoFill for credit cards must be disabled.
SC-18 - Medium - CCI-001166 - V-226402 - SV-226402r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0070
Vuln IDs
  • V-226402
  • V-102869
Rule IDs
  • SV-226402r508655_rule
  • SV-111831
Enabling Google Chrome's AutoFill feature allows users to auto complete credit card information in web forms using previously stored information. If this setting is disabled, Autofill will never suggest or fill credit card information, nor will it save additional credit card information that the user might submit while browsing the web. If this setting is enabled or has no value, the user will be able to control Autofill for credit cards in the UI.
Checks: C-28110r478220_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If AutofillCreditCardEnabled is not displayed under the Policy Name column or it is not set to 0 under the Policy Value column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the AutofillCreditCardEnabled value name does not exist or its value data is not set to 0, this is a finding.

Fix: F-28098r478221_fix

Windows group policy: 1. Open the "group policy editor" tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable AutoFill for credit cards Policy State: Disabled

b
AutoFill for addresses must be disabled.
SC-18 - Medium - CCI-001166 - V-226403 - SV-226403r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0071
Vuln IDs
  • V-226403
  • V-102871
Rule IDs
  • SV-226403r508655_rule
  • SV-111833
Enabling Google Chrome's AutoFill feature allows users to auto complete address information in web forms using previously stored information. If this setting is disabled, Autofill will never suggest or fill address information, nor will it save additional address information that the user might submit while browsing the web. If this setting is enabled or has no value, the user will be able to control Autofill for addresses in the UI.
Checks: C-28111r478223_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If AutofillAddressEnabled is not displayed under the Policy Name column or it is not set to 0 under the Policy Value column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the AutofillAddressEnabled value name does not exist or its value data is not set to 0, this is a finding.

Fix: F-28099r478224_fix

Windows group policy: 1. Open the "group policy editor" tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Enable AutoFill for addresses Policy State: Disabled

b
Import AutoFill form data must be disabled.
SC-18 - Medium - CCI-001166 - V-226404 - SV-226404r508655_rule
RMF Control
SC-18
Severity
M
CCI
CCI-001166
Version
DTBC-0072
Vuln IDs
  • V-226404
  • V-102873
Rule IDs
  • SV-226404r508655_rule
  • SV-111835
This policy forces the autofill form data to be imported from the previous default browser if enabled. If enabled, this policy also affects the import dialog. If disabled, the autofill form data is not imported. If it is not set, the user may be asked whether to import, or importing may happen automatically.
Checks: C-28112r478226_chk

Universal method: 1. In the omnibox (address bar) type chrome://policy 2. If ImportAutofillFormData is not displayed under the Policy Name column or it is not set to 0 under the Policy Value column, this is a finding. Windows method: 1. Start regedit 2. Navigate to HKLM\Software\Policies\Google\Chrome\ 3. If the ImportAutofillFormData value name does not exist or its value data is not set to 0, this is a finding.

Fix: F-28100r478227_fix

Windows group policy: 1. Open the "group policy editor" tool with gpedit.msc 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\ Policy Name: Import autofill form data from default browser on first run Policy State: Disabled