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Zero Day Initiative Advisory 12-181

Zero Day Initiative Advisory 12-181
Posted Aug 29, 2012
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 12-181 - 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 as well as the Microsoft Windows spooler service. When handling certain requests the client-file-name parameter is improperly copied to a local stack buffer. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the SYSTEM.

tags | advisory, remote, arbitrary, local, activex
systems | windows
advisories | CVE-2011-4186
SHA-256 | 8979b4441be91dc89370ce5a0c381bc13ea650e7ac616526aaef1318d9a9dff3

Zero Day Initiative Advisory 12-181

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ZDI-12-181 : Novell iPrint nipplib.dll client-file-name Parsing Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-181
August 29, 2012

- -- CVE ID:
CVE-2011-4186

- -- CVSS:
10, AV:N/AC:L/Au:N/C:C/I:C/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 11195.
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 as well as the Microsoft
Windows spooler service. When handling certain requests the
client-file-name parameter is improperly copied to a local stack buffer. A
remote attacker can exploit this vulnerability to execute arbitrary code
under the context of the SYSTEM.

- -- Vendor Response:
Novell has issued an update to correct this vulnerability. More details can
be found at:
http://www.novell.com/support/kb/doc.php?id=7008708

- -- Disclosure Timeline:
2011-12-22 - Vulnerability reported to vendor
2012-08-29 - 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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