(Pwn2Own) Microsoft Internet Explorer Protocol Handler Sandbox Escape Vulnerability

2015-06-11T00:00:00
ID ZDI-15-251
Type zdi
Reporter lokihardt@ASRT
Modified 2015-06-22T00:00:00

Description

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. 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 usage of res:// and Windows Help Engine. By running specially crafted JavaScript, a 32-bit medium integrity process can be spawned. By injecting privileged javascript into this process, an attacker can leverage this vulnerability to execute code under the context of a medium integrity process.