Rar - CmdExtract::UnstoreFile Integer Truncation Memory Corruption

Source: https://code.google.com/p/google-security-research/issues/detail?id=550 The attached file crashes in CmdExtract::UnstoreFile because the signed int64 DestUnpSize is truncated to an unsigned 32bit integer. Perhaps CmdExtract::ExtractCurrentFile should sanity check Arc.FileHead.UnpSize earl...