ZDI-11-172: Novell iPrint nipplib.dll uri Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-172

June 6, 2011

-- CVE ID:
CVE-2011-1699

-- CVSS:
9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)

-- Affected Vendors:
Novell

-- Affected Products:
Novell iPrint

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11201. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Novell iPrint Client. User interaction is
required to exploit this vulnerability in that the target must visit a
malicious page or open a malicious file.

The flaw exists within the nipplib component which is used by both the
ActiveX and Netscape compatible browser plugins. When handling the uri
parameter from the user specified printer-url the process blindly copies
user supplied data into a fixed-length buffer on the heap. A remote
attacker can exploit this vulnerability to execute arbitrary code under
the context of the browser.

-- Vendor Response:
Novell states:
The defect associated has been updated with the following patch(es):
http://download.novell.com/Download?buildid=6_bNby38ERg~


iPrint on Open Enterprise Server SP2 (Open Enterprise Server 2.0.2
Support Pack 2 x86-64)
http://download.novell.com/Download?buildid=BKCEl4nPhLA~

iPrint on Open Enterprise Server SP2 (Open Enterprise Server 2.0.2
Support Pack 2 x86)
http://download.novell.com/Download?buildid=E7JKbXS39S8~

iPrint on Open Enterprise Server SP3 (Open Enterprise Server 2.0.3
Support Pack 3 x86-64)
http://download.novell.com/Download?buildid=rOKxHB2JX7c~

iPrint on Open Enterprise Server SP3 (Open Enterprise Server 2.0.3
Support Pack 3 x86)
http://download.novell.com/Download?buildid=DyaFUz6Hx_U~

* These patches may be "Field Test Patches" and should be tested first
on a staging or test machine before being applied directly to a
production system.
If you have any questions please contact a Customer Service
Representative at 1-800-858-4000.

-- Disclosure Timeline:
2011-01-24 - Vulnerability reported to vendor
2011-06-06 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Ivan Rodriguez Almuina

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