Extracting Compressed files with any compression algorithm like gzip can cause to denial of service attacks.
+Attackers can compress a huge file which created by repeated similiar byte and convert it to a small compressed file.
+ +When you want to decompress a user-provided compressed file you must be careful about the decompression ratio or read these files within a loop byte by byte to be able to manage the decompressed size in each cycle of the loop.
+ +python ZipFile library is vulnerable by default
+By checking the decompressed size from input zipped file you can check the decompression ratio. attackers can forge this decompressed size header too. +So can't rely on file_size attribute of ZipInfo class. this is recommended to use "ZipFile.open" method to be able to manage decompressed size.
+Reading decompressed file byte by byte and verifying the total current size in each loop cycle in recommended to use in any decompression library.
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