Google addresses two new Chrome zero-day flaws

Google has released Chrome version 86.0.4240.198 that addresses two additional zero-day vulnerabilities that were exploited in the wild.

Google has addressed two zero-day vulnerabilities, actively exploited in the wild, with the release of Chrome version 86.0.4240.198.

The IT giant has fixed a total of five Chrome zero-day vulnerabilities in only three weeks.

Both zero-day flaws, tracked as CVE-2020-16013 and CVE-2020-16017, were reported by anonymous sources. Google experts did not disclose the way the flaws have been exploited in the attacks, for example, it is not clear if they were chained by threat actors.

“Google is aware of reports that exploits for CVE-2020-16013 and CVE-2020-16017 exist in the wild.” reads the Chrome 86.0.4240.198 changelog.

“We would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.”

The CVE-2020-16013 flaw is an inappropriate implementation in V8 Chrome component, it was reported by anonymous on November 9, 2020.

The CVE-2020-16017 flaw is a use after free memory corruption bug in Site Isolation, it was reported by anonymous on November 7, 2020.

It is interesting to note that one of the vulnerabilities was reported to Google the same day the company released the new version of the popular browser.

The other three zero-days patched by Google in the last weeks were:

CVE-2020-15999 – The flaw is a memory corruption bug that resides in the FreeType font rendering library, which is included in standard Chrome releases.
CVE-2020-16009 – is a Heap buffer overflow in Freetype in Google Chrome.
CVE-2020-16010 – affects the browser’s user interface (UI) component in Chrome for Android.

“Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.” concludes the Chrome changelog for the version 86.0.4240.198.

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Pierluigi Paganini

(SecurityAffairs – hacking, Chrome zero-day flaws)

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Pierluigi Paganini

Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer. Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US. Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines. Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.