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AusCERT Update AU-2008.0003 - [Win]
Novell Client NWSPOOL.DLL buffer overflow vulnerability
15 February 2008        AusCERT Update Summary
        ----------------------

Product:              Novell Client 4.91 SP4 and prior
Operating System:     Windows
Impact:               Administrator Compromise
                      Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-0639 CVE-2007-6701
Member content until: Wednesday, March 12 2008

Ref:                  AA-2007.0061

Revision History:     February 15 2008: Added CVE
                      February 13 2008: Initial Release


OVERVIEW:

        The Novell Client on Windows is vulnerable to buffer overflows in
        the NWSPOOL.DLL module. This module runs on the Windows system
        listening for RPC requests.


DETAILS:

        A remote unauthenticated attacker who can send a malicious request
        to a client computer with a vulnerable version of the Novell
        client installed could execute arbitrary code with SYSTEM privileges.

        This vulnerability bypasses the fix described in AA-2007.0061. [1]


MITIGATION:

        Novell has released patches fixing this vulnerability. [2]


REFERENCES:

        [1] ZDI-08-005 Novell Client NWSPOOL.DLL EnumPrinters Stack Overflow
            Vulnerability
            http://www.zerodayinitiative.com/advisories/ZDI-08-005.html

        [2] Novell Client 4.91 Post-SP2/3/4 NWSPOOL.DLL 2
            http://download.novell.com/Download?buildid=SszG22IIugM~


AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

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