Extensions must be blacklisted by default

From Google Chrome v23 Windows STIG

Part of DTBC0005 - Blacklist extensions by default

Associated with IA controls: ECSC-1

Associated with: CCI-001588

SV-46909r1_rule Extensions must be blacklisted by default

Vulnerability discussion

Extensions are developed by third party sources. They 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." - Google Chrome Administrators Policy List

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Fix text

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: *

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