iDefense Security Advisory 07.09.08 - Remote exploitation of a heap buffer overflow vulnerability in Novell Inc.'s eDirectory could allow an attacker to execute arbitrary code with the privileges of the affected service. The vulnerability exists due to an incorrect calculation when allocating a heap buffer to store the search parameters. By passing NULL search parameters, it is possible to overflow a heap based buffer with the string "(null)". This can result in the corruption of heap management structures, and depending on the layout of the heap, possibly function pointers. iDefense has confirmed the existence of this vulnerability in eDirectory version 8.8 SP2 for Linux. Other versions may also be affected.
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