TippingPoint Zero Day Initiative

Oracle Java IE Browser Plugin Corrupted Window Procedure Hook Remote Code Execution Vulnerability

ZDI-11-182: June 8th, 2011


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11313. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the Oracle Sun Java Runtime. 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 JP2IEXP.dll browser plugin. The module creates a window hook when an applet is instantiated within the context of a browser. If the underlying DOM element is cloned and the parent object removed, a dangling reference can exist. When the module attempts to walk the relationship list to call the window hook, the process can be made to jump into uninitialized heap memory. This can be exploited by an attacker to execute code under the context of the user running the browser.

Vendor Response

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

Disclosure Timeline

    2011-01-21 - Vulnerability reported to vendor
    2011-06-08 - Coordinated public release of advisory


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