Extensions that are approved for use must be whitelisted.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-44729	DTBC-0006	SV-57563r1_rule		Medium

Description
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.

Description

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.

STIG	Date
Google Chrome Current Windows STIG	2014-07-08

Details

Check Text ( C-49515r2_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 HKLM\Software\Policies\Google\Chrome\ExtensionInstallWhitelist 3. If the ExtensionInstallWhitelist key does not exist or is not set to oiigbmnaadbkfbmpbfijlflahbdbdgdf or a list of administrator approved extension IDs, then this is a finding.

Check Text ( C-49515r2_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 HKLM\Software\Policies\Google\Chrome\ExtensionInstallWhitelist
3. If the ExtensionInstallWhitelist key does not exist or is not set to oiigbmnaadbkfbmpbfijlflahbdbdgdf or a list of administrator approved extension IDs, then this is a finding.

Fix Text (F-49821r3_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 Note: oiigbmnaadbkfbmpbfijlflahbdbdgdf is the extension ID for scriptno(a commonly used Chrome extension)

Fix Text (F-49821r3_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

Note: oiigbmnaadbkfbmpbfijlflahbdbdgdf is the extension ID for scriptno(a commonly used Chrome extension)