Microsoft Chakra Memory Allocator Integer Overflow Remote Code Execution Vulnerability

2018-01-05T00:00:00
ID ZDI-18-066
Type zdi
Reporter Anonymous
Modified 2018-01-05T00:00:00

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 Chakra's memory allocation routines. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer and writing to memory. An attacker can leverage this vulnerability to execute code under the context of the current process.