Message-ID: <EE499D69B3D0714590B6FE9762B0461104BFE99053@emb01.unity.local>
Date: Sun, 26 Dec 2010 17:12:26 -0600
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'Full Disclosure (full-disclosure@...ts.grok.org.uk)'"
	<full-disclosure@...ts.grok.org.uk>,
	"'Bugtraq (bugtraq@...urityfocus.com)'" <bugtraq@...urityfocus.com>
Subject: ZDI-10-295: Novell iPrint Client Netscape/ActiveX
 printer-state-reasons Remote Code Execution Vulnerability

ZDI-10-295: Novell iPrint Client Netscape/ActiveX printer-state-reasons Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-295

December 26, 2010

-- 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 10758.
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 both the Netscape (Firefox) and ActiveX
(Internet Explorer) plugin components npnipp.dll and ienipp.ocx which
are installed by default with the iPrint client. When handling the
printer-state-reasons operation provided via the embed tag the module
makes a request to the specified printer-url and performs insufficient
validation of the size of the printer-state-reasons status response.
The process then copies this user supplied data into a fixed-length
buffer on the stack. A remote attacker can exploit this vulnerability to
execute arbitrary code under the context of the browser.

-- Vendor Response:
Novell states:
The fix for this security vulnerability is included in the released
"iPrint Client for Windows XP/Vista/Win 7 5.56" patch, available at
http://download.novell.com/Download?buildid=JV7fd0tFHHM~.

-- Disclosure Timeline:
2010-12-06 - Vulnerability reported to vendor
2010-12-26 - Coordinated public release of advisory

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

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
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specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
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vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

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