TippingPoint Zero Day Initiative

Microsoft Internet Explorer textContent Heap Buffer Overflow Remote Code Execution Vulnerability

ZDI-14-185: June 11th, 2014


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote 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 handling of the textContent element property. The issue lies in the failure to properly calculate the length of the buffer during a call to memcpy. An attacker can leverage this vulnerability to execute 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

    2014-03-07 - Vulnerability reported to vendor
    2014-06-11 - Coordinated public release of advisory


This vulnerability was discovered by:
    Stephen Fewer of Harmony Security (www.harmonysecurity.com)