TippingPoint Zero Day Initiative
 

Microsoft Windows JavaScript super Keyword Uninitialized Memory Remote Code Execution Vulnerability

ZDI-17-475: July 11th, 2017

CVE ID

CVSS Score

Affected Vendors

Affected Products

    Windows

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 handling of the super keyword in JavaScript. By performing actions in script an attacker can trigger access to memory prior to initialization. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.

Vendor Response

Microsoft has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2017-05-04 - Vulnerability reported to vendor
    2017-07-11 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    bee13oy of CloverSec Labs