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I notified Google about this vulnerability when I discovered it in March and again in April after receiving no response.
According to Kreb's post, Young reported the bug to Google in May and his ticket was closed with "Status: Won’t Fix (Intended Behavior)." It wasn't until Krebs himself contacted Google that they agreed to patch the vulnerability.
Fast forward five years and it seems that Google has integrated that same mysterious API into all of its Google Home products, and as you can imagine, that undocumented API is fairly well documented by amateurs and hobbyists at this point.
In fact, earlier this year Rithvik Vibhu published detailed API docs to the public.
This API provides extensive device control without any form of authentication.
Some of the most interesting features include the ability to launch entertainment apps and play content, scan and join nearby Wi Fi networks, reboot, and even factory reset the device.
If you follow a malicious link on the web, the web page you arrive at shouldn’t be able to make an HTTP request to your bank website and leverage your logged in-session there to empty your account. (DNS) provides a useful mechanism of translating easy-to-remember domain names into the IP addresses that our computer’s actually use to talk to each other. DNS can be abused to trick web browsers into communicating with servers they don’t intend to.
Browsers restrict this behavior by limiting HTTP requests originating from a domain to access only other resources that are also located on that domain (or another domain that explicitly enables are different domains and therefor the browser treats them as separate origins. The catch is that modern browsers use URLs to evaluate same-origin policy restrictions, not IP addresses. DNS rebinding has received a few brief moments of attention over the past year when vulnerabilities were found in a few popular pieces of software.
What if your roommate left their web browser open on their laptop and an HTML advertisement sends your Chromecast into reboot loops while you are trying to watch a movie?
If companies with such high profiles are failing to prevent against DNS rebinding attacks there must be countless other vendors that are as well.).
The first mention of this service that I’ve been able to find surfaced back in 2013 when Brandon Fiquett wrote about a Local API he found while sniffing the Wi Fi traffic to his Chromecast.
From smart TVs and media players to home assistants, security cameras, refrigerators, door locks and thermostats, our home networks are a haven for trusted personal and domestic devices.
Many of these devices offer limited or non-existent authentication to access and control their services.This attack would be successful even if you’ve disabled your web browser’s geolocation API and are using a VPN to tunnel your traffic through another country.