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             AUSCERT External Security Bulletin Redistribution

                          ESB-2008.0629 -- [Win]
        Novell iPrint Client ActiveX control stack buffer overflows
                                1 July 2008


        AusCERT Security Bulletin Summary

Product:              Novell iPrint Client ActiveX
Publisher:            US-CERT
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-2908

Original Bulletin:    http://www.kb.cert.org/vuls/id/145313

Revision History:     July 1 2008: Added CVE
                      June 19 2008: Initial Release

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Vulnerability Note VU#145313

Novell iPrint Client ActiveX control stack buffer overflows


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.

I. Description

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.

II. Impact

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.

III. Solution

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. 

Systems Affected
Vendor           Status         Date Updated
Novell, Inc.    Vulnerable       18-Jun-2008




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

This document was written by Will Dormann.
Other Information
Date Public  06/12/2008
Date First Published  06/18/2008 10:06:41 AM
Date Last Updated  06/18/2008
CERT Advisory
CVE Name 
US-CERT Technical Alerts	 
Metric 10.94
Document Revision  2

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