Gadget

Zero-day bug hits Chrome

Kaspersky’s automated technologies have detected a new exploited vulnerability in the Google Chrome web browser. Kaspersky has allocated the vulnerability as CVE-2019-13720 and reported it to Google. A patch has been released. Upon review of the PoC provided, Google confirmed that it is a zero-day vulnerability.

Zero-day vulnerabilities are previously unknown software bugs that can be exploited by attackers to inflict serious and unexpected damage. The new exploit is used in attacks that leverage a waterhole-style injection in a Korean-language news portal. A malicious JavaScript code is inserted in the main page, which in turn, loads a profiling script from a remote site to further check if the victim’s system could be infected by examining versions of the browser’s user credentials. The vulnerability tries to exploit the bug through the Google Chrome browser and the script checks if version 65 or later is being used. The exploit gives an attacker a Use-After-Free (UaF) condition, which is very dangerous because it can lead to code execution scenarios.

The detected exploit was used in what Kaspersky experts call “Operation WizardOpium”. Certain similarities in the code point to a possible link between this campaign and Lazarus attacks. Additionally, the profile of the targeted website is similar to what has been found in previous DarkHotel attacks, which have recently deployed comparable false flag attacks.

The exploited vulnerability was detected by Kaspersky’s Exploit Prevention technology, embedded in most of the company’s products.

“The finding of a new Google Chrome zero-day in the wild once again demonstrates that it is only collaboration between the security community and software developers, as well as constant investment in exploit prevention technologies, that can keep us safe from sudden and hidden strikes by threat actors,” said Anton Ivanov, a security expert at Kaspersky.

Kaspersky products detect the exploit as PDM:Exploit.Win32.Generic.

Kaspersky recommends taking the following security measures:

For further details on the new exploit see the report on Securelist.

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