A security researcher has dropped a zero-day remote code execution vulnerability on Twitter that works on the current version of Google Chrome and Microsoft Edge.
A zero-day vulnerability is a security bug that has been publicly disclosed but has not been patched in the released version of the affected software.
Today, security researcher Rajvardhan Agarwal released a working proof-of-concept (PoC) exploit for a remote code execution vulnerability for the V8 JavaScript engine in Chromium-based browsers.
Just here to drop a chrome 0day. Yes you read that right.https://t.co/sKDKmRYWBPpic.twitter.com/PpVJrVitLR
The screenshot was taken on Google Chrome (PC) Current Chrome Version. Till 20 January 2020 the google chrome latest version for few platforms are. They are all basically the same version of Chrome - typically containing the same functionality and features across platforms - however you'll notice in the table above that usually the very last version number. The latest version of Chrome can’t be installed in Win XP. As Win Xp stopped supporting security updates and also XP doesn’t support graphics properties like latest Win 10. But in Win 7 (also stopped security updates but) the latest chrome will ru. 2 days ago The latest version of Chrome on Android includes a new price tracking feature. The feature is live for some users on Chrome v90, and alerts you about any price drops in your open tabs. Google Chrome (finally?) reduces memory and CPU drain While a few days ago we were singing the praises of all the novelties of the latest version of Firefox, today it's the turn of its number 1 rival: version 57 of Google Chrome arrives with several new features, foremost among them a savings in the memory and CPU consumption.
— Rajvardhan Agarwal (@r4j0x00) April 12, 2021While Agarwal states that the vulnerability is fixed in the latest version of the V8 JavaScript engine, it is not clear when Google will roll out the Google Chrome.
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When the PoC HTML file, and its corresponding JavaScript file, are loaded in a Chromium-based browser, it will exploit the vulnerability to launch the Windows calculator (calc.exe) program.
While no developer likes a zero-day release for their software, the good thing is that Agarwal's zero-day cannot currently escape the browser's sandbox. The Chrome sandbox is a browser security boundary that prevents remote code execution vulnerabilities from launching programs on the host computer.
For Agarwal's zero-day RCE exploit to work, it would need to be chained with another vulnerability that can allow the exploit to escape the Chromium sandbox.
To test the exploit, BleepingComputer launched the Microsoft Edge and Google Chrome browsers with the --no-sandbox
flag, which turns off the Chromium sandbox.
With the sandbox disabled, we could use Agarwal's exploit to launch Calculator on our Windows 10 device. Our tests' exploitable versions are Google Chrome 89.0.4389.114 and Microsoft Edge 89.0.774.76, which are the latest versions in the Stable channel.
This vulnerability is believed to be the same one used by Dataflow Security's Bruno Keith and Niklas Baumstark at Pwn2Own 2021, where the researchers exploited Google Chrome and Microsoft Edge.
getting popped with our own bugs wasn't on my bingo card for 2021. not sure it was too smart of Google to add that regression test right away... https://t.co/e0RUlmbxRK
— Niklas B (@_niklasb) April 12, 2021Google is expected to release Chrome 90 to the Stable channel tomorrow, and we will have to see if the upcoming version includes a fix for this zero-day RCE vulnerability.
BleepingComputer has contacted Google about the zero-day but has not received a reply as of yet.
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