Security Focus (Microsoft Edge) – Critical vulnerabilities fixed in November 2018 Patch Tuesday

Preface:
Chakra is a JavaScript engine developed by Microsoft for its Microsoft Edge web browser. It is a fork of the JScript engine used in Internet Explorer.

Description:
The technical details issued by patch Tuesday not describe explicitly (see below).

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge.This vulnerability could also be exploited through Microsoft Edge via specially crafted web sites or advertisements..

Speculation:
Remote attacker to execute arbitrary code on the system caused by a ballout error in the JavaScript JIT compiler when inling ‘Array.prototype.push’ with multiple arguments.
Remark: The push() method adds oneor more elements to the end of an array and returns the new length of the array.

Remedy:

Cyber security technical information

Security Focus (Microsoft Edge) – Critical vulnerabilities fixed in November 2018 Patch Tuesday

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