Microsoft Chakra ArrayBuffer.transfer Uninitialized Buffer Information Leak Vulnerability

2016-07-12T00:00:00
ID ZDI-16-413
Type zdi
Reporter WanderingGlitch of the Zero Day Initiative
Modified 2016-11-09T00:00:00

Description

This vulnerability allows remote attackers to leak sensitive information 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 ArrayBuffer.transfer. The issue lies in the failure to properly initialize a buffer prior to returning it to the user. An attacker can leverage this vulnerability to leak sensitive information within the context of the current process.