Secunia Research has discovered multiple vulnerabilities in Novell Client, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.

The vulnerabilities are caused due to boundary errors within NWSPOOL.DLL when processing arguments passed to certain RPC requests (e.g. RpcAddPrinterDriver and RpcGetPrinterDriverDirectory). These can be exploited to cause stack-based buffer overflows via RPC requests with specially crafted, overly long arguments.

Successful exploitation allows crashing the service and execution of arbitrary code.

The vulnerabilities are confirmed in Novell Client v4.91 SP4 for Windows 2000/XP/2003. Other versions may also be affected.

Solution
Apply patch.
Further details available in Customer Area

Provided and/or discovered by
JJ Reyes, Secunia Research.

Changelog
Further details available in Customer Area

Original Advisory
Secunia Research:
http://secunia.com/secunia_research/2007-57/

Novell:
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5007240.html

Deep Links
Links available in Customer Area