OpenOffice has released 2.4.1 which fixes a heap overflow problem that allows attackers to craft malicious OpenOffice documents that can execute arbitrary code.  (See their bulletin). The vulnerability is complicated by the platform independent nature of OpenOffice, but that just means someone has to write several versions of malicious files to ensure infected a variety of operating systems.  Advice is, as always, update to the latest version.

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John Bambenek / bambenek \at\ gmail |dot| com