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Novell iPrint Client Netscape Plugin call-back-url Parameter Remote Code Execution Vulnerability

December 26th, 2010

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.

Additional Details

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

Ivan Rodriguez Almuina

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