iDEFENSE Security Advisory 12.16.05 - Remote exploitation of a heap overflow vulnerability in Citrix, Inc.'s Program Neighborhood allows attackers to execute arbitrary code. The vulnerability specifically exists due to insufficient handling of corrupt Application Set responses. A heap-based buffer overflow will occur when the Citrix Program Neighborhood client receives an Application Set response containing a name value over 286 bytes. iDefense has confirmed the existence of this vulnerability in Citrix Presentation Server Client 9.0. All prior versions are suspected vulnerable.
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