Microsoft Chakra Array JIT Optimization Type Confusion Remote Code Execution Vulnerability

2017-10-10T00:00:00
ID ZDI-17-844
Type zdi
Reporter Anonymous
Modified 2017-10-11T00:00:00

Description

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Chakra. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of arrays in JavaScript. By performing actions in JavaScript an attacker can trigger a type confusion condition. An attacker can leverage this vulnerability to execute code under the context of the current process.