Microsoft Chakra JavaScript Array Literal Use-After-Free Remote Code Execution Vulnerability

2018-09-13T00:00:00
ID ZDI-18-1047
Type zdi
Reporter Anonymous
Modified 2018-06-22T00:00:00

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 array literals in JavaScript. By performing actions in JavaScript, an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code in the context of the current process.