Google fixes Chrome zero-day flaw exploited in the wild

Pierluigi Paganini February 25, 2020

Google has released Chrome 80 update that addresses three high-severity vulnerabilities, one of them has been exploited in the wild.

Google has released Chrome 80 update (version 80.0.3987.122) that addresses three high-severity vulnerabilities, including a zero-day issue (CVE-2020-6418) that has been exploited in the wild. The CVE-2020-6418 vulnerability is a type confusion issue that affects the V8 open source JavaScript engine used by the Chrome browser.

Google did not disclose details of the attack exploiting this zero-day flaw to avoid other threat actors will start to exploit it. The vulnerability was discovered by Clement Lecigne from the Google Threat Analysis Group.

The remaining flaws fixed by Google are an integer overflow in ICU and an out-of-bounds memory access issue in the streams component.

The integer overflow was reported by the security expert André Bargull, who was awarded $5,000 for its discovery.

The out-of-bounds vulnerability addressed with the release of Chrome 80 update (version 80.0.3987.122) was discovered by Sergei Glazunov of Google Project Zero.

This is the third Chrome zero-day that has been exploited by threat actors in the wild in the past year.

In February 2019, Clement Lecigne discovered a high severity zero-day flaw in Chrome that could be exploited by a remote attacker to execute arbitrary code and take full control of the target computer.

The vulnerability tracked as CVE-2019-5786 resides in the web browsing software and impact all major operating systems including Windows, Apple macOS, and Linux.

In November 2019, Google released security updates to address two high severity vulnerabilities in the Chrome browser, one of which is a zero-day flaw actively exploited in attacks in the wild to hijack computers.

One of the flaw, tracked as CVE-2019-13720, was exploited in a campaign that experts attribute to Korea-linked threat actors.

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Pierluigi Paganini

(SecurityAffairs – hacking, Google Chrome)

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