====================================================================== 

                     Secunia Research 25/08/2008

  - Novell iPrint Client ActiveX Control Multiple Buffer Overflows -

====================================================================== 
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

====================================================================== 
1) Affected Software 

* Novell iPrint Client 4.36

NOTE: Other versions may also be affected.

====================================================================== 
2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

====================================================================== 
3) Vendor's Description of Software 

"Neither you nor your users have time to devote to a complex printing
environment. That's why Novell iPrint extends print services securely
across multiple networks and operating systems. Using proven Internet
technologies, iPrint transforms your Novell Distributed Print 
Services™ (NDPS®) printers into Net-enabled printers, making all your
printing resources instantly accessible with a Web browser and a few
mouse clicks".

Product Link:
http://www.novell.com/products/openenterpriseserver/iprint.html

====================================================================== 
4) Description of Vulnerability

Secunia Research has discovered multiple vulnerabilities in Novell
iPrint Client, which can be exploited by malicious people to 
compromise a user's system.

1) A boundary error in the Novell iPrint ActiveX control (ienipp.ocx)
when handling the "GetDriverFile()" method can be exploited to cause a
stack-based buffer overflow by passing an overly long string as the 
third argument.

2) Two boundary errors in the Novell iPrint ActiveX control 
(ienipp.ocx) when constructing a URI based on input to the 
"GetPrinterURLList()" and "GetPrinterURLList2()" methods can be 
exploited to cause limited stack-based buffer overflows via an overly
long string passed as the 1st argument.

3) A boundary error in the Novell iPrint ActiveX control (ienipp.ocx)
when handling the "GetFileList()" method can be exploited to cause a 
heap-based buffer overflow via an overly long argument.

4) Various boundary errors in nipplib.dll when e.g. creating a server
reference or interpreting a URI can be exploited to cause stack-based 
and heap-based buffer overflows by e.g. passing an overly long string 
as argument to the "GetServerVersion()", "GetResourceList()", or 
"DeleteResource()" methods provided by the Novell iPrint ActiveX 
control (ienipp.ocx).

5) Boundary errors in the Novell iPrint ActiveX control (ienipp.ocx) 
when constructing a URI based on input to the "UploadPrinterDriver()"
and "UploadResource()" methods can be exploited to cause a heap-based 
buffer overflow and limited stack-based buffer overflow via an overly 
long, specially crafted "uploadPath" argument.

6) A boundary error in the Novell iPrint ActiveX control (ienipp.ocx) 
when copying "target-frame" option values passed to the 
"ExecuteRequest()" method can be exploited to cause a limited 
stack-based buffer overflow via an overly long "target-frame" option 
value.

7) A boundary error in the Novell iPrint ActiveX control (ienipp.ocx)
when handling the "UploadResource()" method can be exploited to cause
a stack-based buffer overflow by passing an overly long string as the
7th argument.

8) Three boundary errors in nipplib.dll within the 
"IppGetDriverSettings()" function can be exploited to cause 
stack-based buffer overflows by passing an overly long string as the
2nd, 3rd, or 4th argument of the "GetDriverSettings()" method provided
by Novell iPrint ActiveX control (ienipp.ocx).

9) A boundary error in the Novell iPrint ActiveX control (ienipp.ocx)
when handling the "UploadResourceToRMS" method can be exploited to 
cause a stack-based buffer overflow by passing an overly long string 
as the 8th argument.

====================================================================== 
5) Solution 

The vulnerabilities are fixed in version 5.06.

====================================================================== 
6) Time Table 

18/06/2008 - Vendor notified (1st batch of vulnerabilities)
18/06/2008 - Vendor response.
23/06/2008 - Vendor notified (2nd batch of vulnerabilities)
23/06/2008 - Vendor response.
27/06/2008 - Vendor notified (3rd batch of vulnerabilities)
27/06/2008 - Vendor response.
07/07/2008 - Vendor reports that vulnerabilities have been addressed.
08/07/2008 - Vendor provides new version for testing.
08/07/2008 - Vendor informed that all vulnerabilities are fixed.
22/08/2008 - Vendor issues fixed version for Vista.
25/08/2008 - Public disclosure.

====================================================================== 
7) Credits 

Discovered by Carsten Eiram, Secunia Research.

====================================================================== 
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2008-2431 for the vulnerabilities.

====================================================================== 
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://corporate.secunia.com/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://corporate.secunia.com/secunia_research/33/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/secunia_vacancies/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/ 

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2008-27/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================