A Windows 10 kernel bug made it possible to escape Google Chrome's sandbox, a security researcher with Google Project Zero found. The vulnerability was introduced with version 1903 of the operating system on May 21, 2019.
Google Chrome's sandbox is a secure environment that downgrades browser processes to low permissions and cuts them from the rest of the system to prevent damage if hijacked by a malicious actor.
"For all the good, it does have its weaknesses. The main one being the sandbox’s implementation is reliant on the security of the Windows OS," James Forshaw, a security researcher in Google's Project Zero team of zero-day hunters explained.
"Changing the behavior of Windows is out of the control of the Chromium development team. If a bug is found in the security enforcement mechanisms of Windows then the sandbox can break."
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