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Novell iPrint Client ActiveX control stack buffer overflows

Vulnerability Note VU#145313

Original Release Date: 2008-06-18 | Last Revised: 2009-04-13


The Novell iPrint Client ActiveX control contains multiple stack buffer overflows, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.


Novell iPrint is a software printing solution that allows for printing over the internet. One of the components of iPrint is an ActiveX control, which is provided by the file ienipp.ocx. This ActiveX control contains buffer overflows in multiple initialization parameters.


By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user.


Apply an update

This issue is addressed in the Novell iPrint Client for Windows 4.36. Please see the Novell Support document 5028061 for more details.

Disable the Novell iPrint Client ActiveX control in Internet Explorer

The vulnerable ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSID:

More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{36723F97-7AA0-11D4-8919-FF2D71D0D32C}]
"Compatibility Flags"=dword:00000400
Disable ActiveX

Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document. 

Vendor Information


Novell, Inc. Affected

Notified:  February 22, 2008 Updated: June 18, 2008



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.


This issue is addressed in the Novell iPrint Client for Windows 4.36. Please see the Novell Support document 5028061 for more details.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector



This vulnerability was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

CVE IDs: None
Severity Metric: 10.94
Date Public: 2008-06-12
Date First Published: 2008-06-18
Date Last Updated: 2009-04-13 17:17 UTC
Document Revision: 5

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