Google released an updated version of Google Chrome version 66.0.3359.170 for Windows, Mac, and Linux systems that addressed 4 security vulnerabilities.
“This update includes 4 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chrome Security Page for more information.” reads the post published by Google.
-  Critical: Chain leading to sandbox escape. Reported by Anonymous on 2018-04-23:
-  High CVE-2018-6121: Privilege Escalation in extensions.
-  High CVE-2018-6122: Type confusion in V8.
- [$5000] High CVE-2018-6120: Heap buffer overflow in PDFium. Reported by Zhou Aiting(@zhouat1) of Qihoo 360 Vulcan Team on 2018-04-17″
Three vulnerabilities were reported by external security researchers. The most critical issues are related to privilege escalation in extensions tracked as CVE-2018-6121 and a type confusion in V8 tracked as CVE-2018-6122.
Chrome addressed the CVE-2018-6120 heap buffer overflow in PDFium reported by Zhou Aiting of Qihoo 360 Vulcan Team that received a $5,000 reward.
Google issued security patches to address another Critical flaw in Chrome, the flaw was fixed in April with the 66.0.3359.137 version.
Pedro Tavares is a professional in the field of information security working as an Ethical Hacker/Pentester, Malware Researcher and also a Security Evangelist. He is also a founding member at CSIRT.UBI and Editor-in-Chief of the security computer blog seguranca-informatica.pt.
In recent years he has invested in the field of information security, exploring and analyzing a wide range of topics, such as pentesting (Kali Linux), malware, exploitation, hacking, IoT and security in Active Directory networks. He is also Freelance Writer (Infosec. Resources Institute and Cyber Defense Magazine) and developer of the 0xSI_f33d – a feed that compiles phishing and malware campaigns targeting Portuguese citizens.
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