TippingPoint Zero Day Initiative
 

Microsoft Windows JavaScript Proxy Setter Type Confusion Remote Code Execution Vulnerability

ZDI-17-170: March 21st, 2017

CVE ID

CVSS Score

Affected Vendors

Affected Products

    Windows

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 26885. For further product information on the TippingPoint IPS:

Vulnerability Details


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 script that sets a property on a JavaScript object that is intercepted by a Proxy object. By performing actions in JavaScript an attacker can trigger a type confusion condition. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.

Vendor Response

Microsoft states:


Disclosure Timeline

    2016-12-01 - Vulnerability reported to vendor
    2017-03-21 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    bee13oy of CloverSec Labs