TippingPoint Digital Vaccine Laboratories
DID YOU KNOW... TippingPoint customers were protected against 0-day exploitation of MS07-017 two years prior to the exploit being discovered in the wild.

Novell iPrint Client Browser Plugin GetDriverFile Uninitialized Pointer Remote Code Execution Vulnerability

TPTI-10-08: August 23rd, 2010


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10264. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the Novell iPrint client. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific flaw exists within the ienipp.ocx ActiveX control with CLSID 36723f97-7aa0-11d4-8919-FF2D71D0D32C. The function exposes a GetDriverFile method. When this method is invoked for the first time a pointer in the .data section is mapped to an external function within another module. When invoked the second time, the process fails to load the library and assumes the pointer is still valid. When the uninitialized pointer is called the process jumps to an address space easily controlled by an attacker. This can be leveraged to execute remote code under the context of the user running the browser.

Vendor Response

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

Disclosure Timeline

    2010-08-12 - Vulnerability reported to vendor
    2010-08-23 - Coordinated public release of advisory


This vulnerability was discovered by: