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Extensions must be blacklisted by default


Finding ID Version Rule ID IA Controls Severity
V-0005 DTBC-0005 SV-0005r1_rule Medium
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.
Google Chrome STIG Draft 2012-09-25


Check Text ( C-0005r1_chk )
Universal method (Requires Chrome Browser v15 or later):
1. In the omnibox (address bar) type chrome://policy
2. If ExtensionInstallBlacklist is displayed under the Policy Name column and it is set to * under the Policy Value column, then this is not a finding.

Windows method:
1. Start regedit
2. Navigate to HKLM\Software\Policies\Google\Chrome\ExtensionInstallBlacklist
3. If the ExtensionInstallBlacklist key does not exist, or a registry value name of 1 does not exist under that key, or the registry value name of 1 does not have its value data set to * then this is a finding.
Fix Text (F-0005r1_fix)

Valid for Chrome Browser version 8 or later.

Windows registry:
Key Path: HKLM\Software\Policies\Google\Chrome\ExtensionInstallBlacklist
Value Name: 1
Value Type: String (REG_SZ)
Value Data: *

Windows group policy:
Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Extensions\
Policy Name: Configure extension installation blacklist
Policy State: Enabled
Policy Value: *