CVE-2020-6512: 
Node.js vulnerability analysis and mitigation

CVE-2020-6512 is a Type Confusion vulnerability discovered in V8 engine of Google Chrome prior to version 84.0.4147.89. The vulnerability was disclosed on July 22, 2020, and affects the Chrome browser's JavaScript engine. This security flaw allowed remote attackers to potentially exploit heap corruption through a specially crafted HTML page (NVD, Chrome Release).

The vulnerability is classified as a Type Confusion issue in Chrome's V8 JavaScript engine, with a CVSS v3.1 base score of 8.8 (HIGH) and vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The CVSS v2.0 score is 9.3 (HIGH) with vector (AV:N/AC:M/Au:N/C:C/I:C/A:C). The vulnerability is related to CWE-843 (Access of Resource Using Incompatible Type) and CWE-787 (Out-of-bounds Write) (NVD).

The vulnerability could allow remote attackers to potentially exploit heap corruption through a crafted HTML page, potentially leading to arbitrary code execution, information disclosure, or denial of service. The high severity rating indicates significant potential impact on the confidentiality, integrity, and availability of the affected system (NVD, Red Hat).

The vulnerability requires user interaction (visiting a maliciously crafted webpage) to be exploited. It was reported by nocma, leogan, and cheneyxu of WeChat Open Platform Security Team on May 20, 2020. A reward of $5000 was issued for this discovery (Chrome Release).

The vulnerability was patched in Google Chrome version 84.0.4147.89. Users and administrators are strongly advised to upgrade to this version or later. Multiple Linux distributions including Debian, Fedora, and Gentoo have released security updates to address this vulnerability (Debian, Fedora, Gentoo).