Microsoft Edge CBaseScriptable PrivateQueryInterface Uninitialized Memory Remote Code Execution Vulnerability

2016-06-22T00:00:00
ID ZDI-16-371
Type zdi
Reporter Shi Ji (@Puzzor) of VARAS@IIE
Modified 2016-11-09T00:00:00

Description

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Edge. 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 implementation of CBaseScriptable::PrivateQueryInterface. By performing certain operations in script, an attacker can cause Microsoft Edge to read uninitialized data from a memory location on the stack. An attacker can leverage this to execute code under the context of the current process.