full-disclosure - ZDI-10-300: Novell iPrint Client Netscape/ActiveX Plugin HTTP_CONNECTION Remote Code Execution Vulnerability

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Message-ID: <EE499D69B3D0714590B6FE9762B0461104BFE99058@emb01.unity.local>
Date: Sun, 26 Dec 2010 17:26:15 -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-10-300: Novell iPrint Client Netscape/ActiveX
 Plugin HTTP_CONNECTION Remote Code Execution Vulnerability

ZDI-10-300: Novell iPrint Client Netscape/ActiveX Plugin HTTP_CONNECTION Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-300

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 10749.
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. Authentication is not
required to exploit this vulnerability.

The flaw exists within the nipplib.dll component used by the the Mozilla
and Internet Explorer browser plugins for iPrint client. When parsing an
HTTP response the Connection response length is in sufficiently
validated before being copied 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:
2010-11-29 - 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):
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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

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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
altruistic aim of helping to secure a broader user base, TippingPoint
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