ZDI-12-181 : Novell iPrint nipplib.dll client-file-name Parsing Remote Code Execution Vulnerability

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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

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