0-day SandBox RCE in Google Chrome on Sale!

RHC Dark Lab : 26 Giugno 2024 14:55

Another alarming discovery in the cyber-security landscape shakes the internet. A threat actor put on sale (on BreachForum) a dangerous 0-day vulnerability affecting the Google Chrome browser. This flaw, named “Sandbox RCE”, allows for arbitrary code execution with high privileges, exposing vulnerable systems to an elavated risk.

VULNERABILITY DETAILS

The advertisement specifies that the vulnerability has been tested on two distincts Chrome versions (126.0.6478.128 and 126.0.6478.127) and the targets Windows OS systems (version 21H1 e 21H2). A RCE is a critical vulnerability that permits a bad actor to execute malicious code on a target device remotely, without the victim’s knowledge. The threat is amplified because it bypass the browser’s sandbox, an enviroment designed to isolate browser’s processes from accessing the OS.

PAYMENT METHODS

In the sale announcement the seller states “Selling Chome Sandbox Escape RCE in chrome”, including the price fixed at 1.000.000 USD. The only payment methods allowed are Monero (XMR) or Bitcoin (BTC), cryptocurrency use grant anonymous payments. The elevated cost suggests thatan highly reliable and powerful exploit.

THE MIDDLE MAN

A well-known threat actor called IntelBroker would act as middleman making easy the payment and exploit delivery. Moreover a middleman should provide trust and transparency incentivizing the purchase. This specific couple of buyre and middle-man are the same that provided another advertisment for a Linux Kernel 0-day a few days ago.

SECURITY MEASURES

0-day vulnerabilities define the biggest threat in the digital space, this flaw are unknown to the product supplier and the patch cannot be developed until a proof of the vulnerability gets uncovered. In the context of the Chrome Browser’s Sandbox the potential bypass of the safeguars and the possibility of execute code at OS level expose systems to an high risk. Every user and company should implement available security measures to protect their system. Sharing and collaboration of information inside the infosec community are essential to face dangerous threat like 0-days in an efficient way.

CONCLUSION

Chrome is the most used web browser in the world, with a market share >60%. This means the potential victims range is really wide. Regular updates, security softwareand common sense are required to avoid to be caught by this exploit. Regardless all the mitigation measures active in systems we must remember the zero risk doesn’t exist.

RHC Dark Lab
RHC Dark Lab è un gruppo di esperti della community di Red Hot Cyber dedicato alla Cyber Threat Intelligence guidato da Pietro Melillo. Partecipano al collettivo, Sandro Sana, Alessio Stefan, Raffaela Crisci e altri membri che vogliono rimanere anonimi. La loro missione è diffondere la conoscenza sulle minacce informatiche per migliorare la consapevolezza e le difese digitali del paese, coinvolgendo non solo gli specialisti del settore ma anche le persone comuni. L'obiettivo è diffondere i concetti di Cyber Threat Intelligence per anticipare le minacce.