Technical Description

A vulnerability has been identified in Novell Client, which could be exploited by attackers to execute arbitrary commands. This flaw is due to a buffer overflow error in the NDPS RPC communication layer implementation ("dprpcw32.dll") that does not properly handle malformed requests/replies, which could be exploited by attackers to compromise a vulnerable system via a specially crafted network message.

Affected Products

Novell Client version 4.83 SP3 for Windows 2000/XP/2003
Novell Client version 4.90 SP2 for Windows 2000/XP/2003
Novell Client version 4.91 SP2 for Windows 2000/XP/2003
Novell Novell Open Enterprise Server

Solution

Install Novell Client 4.91 Post-SP2 DPRPCW32.DLL :
http://support.novell.com/servlet/filedownload/sec/ftf/491psp2_dprpcw32.exe
Or DPRPCNLM.NLM version 3.00.16 (2006-05-02) for Novell Novell Open Enterprise Server :
http://support.novell.com/

References

http://www.vupen.com/english/advisories/2006/1759
http://support.novell.com/cgi-bin/search/searchtid.cgi?/2973719.htm
http://www.hustlelabs.com/novell_ndps_advisory.pdf

Credits

Vulnerability reported by Ryan Smith and Alex Wheeler

ChangeLog

2006-05-10 : Initial release
2006-05-15 : Updated Advisory

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