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Novell NetWare Client for Windows OpenPrinter() function vulnerable to buffer overflow

Vulnerability Note VU#300636

Original Release Date: 2006-12-19 | Last Revised: 2006-12-19


A vulnerability exists in the Novell NetWare client that could allow a remote attacker to execute arbitrary code on an affected system.


NetWare is a network operating system produced and maintained by Novell. Novell provides NetWare clients for Microsoft Windows and Linux operating systems.

From the Novell Client for Windows XP/2000 product overview:
It enables you to access NetWare® services from Windows XP or 2000 workstations or servers and tightly integrates either product into your NetWare network. For example, with Novell Client for Windows XP/2000, you can browse through authorized NetWare directories, transfer files, print documents and use advanced NetWare services directly from a Windows XP or 2000 workstation.
The nwspool.dll library is included with the Novell Client for Windows, and provides access to remote printing services.

There is a buffer overflow vulnerability in the OpenPrinter() function which is used in the nwspool.dll library. An attacker may be able to trigger the overflow by sending specially-crafted Remote Procedure Call (RPC) requests to the Spooler service on a vulnerable system.


A remote unauthenticated attacker may be able to execute arbitrary code on a vulnerable system.


Novell has issued a beta upgrade that addresses this issue. See Novell Technical Information Document TID2974765 for more details.

Vendor Information


Novell, Inc. Affected

Updated:  December 19, 2006



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


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The Zero Day Initiative disclosed this vulnerability.

This document was written by Ryan Giobbi.

Other Information

CVE IDs: CVE-2006-5854
Severity Metric: 3.21
Date Public: 2006-11-21
Date First Published: 2006-12-19
Date Last Updated: 2006-12-19 21:29 UTC
Document Revision: 12

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