Heap-based buffer overflow in OpenOffice.org (aka StarOffice) 1.1.x up to 1.1.5 and 2.0.x before 2.0.3 allows user-assisted attackers to execute arbitrary code via a crafted OpenOffice XML document that is not properly handled by (1) Calc, (2) Draw, (3) Impress, (4) Math, or (5) Writer, aka "File Format / Buffer Overflow Vulnerability."