Heap-based buffer overflow in mplayerc.exe in Media Player Classic (MPC) 6.4.9.0 and earlier, as used standalone and in mympc (aka CD-Storm) 1.0.0.1, StormPlayer 1.0.4, and possibly other products, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a .avi file with an "indx truck size" of 0xffffffff, and certain wLongsPerEntry and nEntriesInuse values.