Microsoft Windows JavaScript map Method Heap-based Buffer Overflow Remote Code Execution Vulnerability

ID ZDI-16-514
Type zdi
Reporter Richard Zhu (fluorescence)
Modified 2016-11-09T00:00:00


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. 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 processing of the JavaScript map function, as implemented in chakra.dll. By performing actions in JavaScript an attacker can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.