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List: full-disclosure
Subject: [Full-disclosure] ZDI-10-298: Novell iPrint Client Netscape Plugin
From: ZDI Disclosures <zdi-disclosures () tippingpoint ! com>
Date: 2010-12-26 23:18:39
Message-ID: EE499D69B3D0714590B6FE9762B0461104BFE99056 () emb01 ! unity ! local
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ZDI-10-298: Novell iPrint Client Netscape Plugin call-back-url Parameter Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-298
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 npnipp.dll Mozilla browser plugin for iPrint
client. When assembling a URL using the user supplied call-back-url, the
value is passed into a urlencode function where it is 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:
2010-11-30 - 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
its intrusion prevention technology. Explicit details regarding the
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
provides this vulnerability information confidentially to security
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/
Follow the ZDI on Twitter:
http://twitter.com/thezdi
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class=WordSection1><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>ZDI-10-298: Novell iPrint Client Netscape Plugin \
call-back-url Parameter Remote Code Execution Vulnerability<o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><a \
href="http://www.zerodayinitiative.com/advisories/ZDI-10-298">http://www.zerodayinitiative.com/advisories/ZDI-10-298</a><o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>December 26, 2010<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>-- CVSS:<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>9, \
(AV:N/AC:L/Au:N/C:P/I:P/A:C)<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>-- Affected Vendors:<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'>Novell<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>-- Affected \
Products:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>Novell iPrint<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>-- TippingPoint(TM) IPS Customer \
Protection:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>TippingPoint IPS customers have been protected against \
this<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>vulnerability by Digital Vaccine protection filter ID 10749. \
<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>For further product information on the TippingPoint IPS, \
visit:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'> <a \
href="http://www.tippingpoint.com">http://www.tippingpoint.com</a><o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>-- Vulnerability Details:<o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'>This \
vulnerability allows remote attackers to execute arbitrary code on<o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'>vulnerable \
installations of Novell iPrint Client. Authentication is not<o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'>required to \
exploit this vulnerability. <o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>The flaw exists within the npnipp.dll Mozilla browser plugin \
for iPrint<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>client. When assembling a URL using the user supplied \
call-back-url, the<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>value is passed into a urlencode function where it is copied \
into a<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>fixed-length buffer on the stack. A remote attacker can \
exploit this<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>vulnerability to execute arbitrary code under the context of \
the<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>browser.<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>-- Vendor \
Response:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>Novell states:<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>The fix for this security \
vulnerability is included in the released<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>"iPrint Client for \
Windows XP/Vista/Win 7 5.56" patch, available at<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'><a \
href="http://download.novell.com/Download?buildid=JV7fd0tFHHM~">http://download.novell.com/Download?buildid=JV7fd0tFHHM~</a><o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>-- Disclosure \
Timeline:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>2010-11-30 - Vulnerability reported to \
vendor<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>2010-12-26 - Coordinated public release of \
advisory<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>-- \
Credit:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>This vulnerability was discovered by:<o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'> * Ivan Rodriguez Almuina<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>-- About the Zero Day Initiative \
(ZDI):<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>Established by TippingPoint, The Zero Day Initiative (ZDI) \
represents <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>a best-of-breed model for rewarding security researchers for \
responsibly<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'>disclosing discovered \
vulnerabilities.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>Researchers interested in \
getting paid for their security research<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>through the ZDI can find \
more information and sign-up at:<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'> <a \
href="http://www.zerodayinitiative.com">http://www.zerodayinitiative.com</a><o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>The ZDI is unique in how \
the acquired vulnerability information is<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>used. TippingPoint does not \
re-sell the vulnerability details or any<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>exploit code. Instead, upon \
notifying the affected product vendor,<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>TippingPoint provides its \
customers with zero day protection through<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>its intrusion prevention \
technology. Explicit details regarding the<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>specifics of the \
vulnerability are not exposed to any parties until<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>an official vendor patch is \
publicly available. Furthermore, with the<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>altruistic aim of helping \
to secure a broader user base, TippingPoint<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>provides this vulnerability \
information confidentially to security<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>vendors (including \
competitors) who have a vulnerability protection or<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>mitigation \
product.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>Our vulnerability \
disclosure policy is available online at:<o:p></o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'> <a \
href="http://www.zerodayinitiative.com/advisories/disclosure_policy/">http://www.zerodayinitiative.com/advisories/disclosure_policy/</a><o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'>Follow the ZDI on \
Twitter:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal \
style='text-autospace:none'><span style='font-family:"Courier New"'> <a \
href="http://twitter.com/thezdi">http://twitter.com/thezdi</a><o:p></o:p></span></p><p \
class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier \
New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span \
style='font-family:"Courier New"'><o:p> </o:p></span></p><p \
class=MsoNormal><o:p> </o:p></p></div></body></html>
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