diff --git a/pythonic/file/tar.py b/pythonic/file/tar.py index 3ade060..236caa9 100644 --- a/pythonic/file/tar.py +++ b/pythonic/file/tar.py @@ -8,7 +8,29 @@ # tar.gz 파일의 압축 해제 with tarfile.open('compress.tar.gz', 'r:gz') as tr: - tr.extractall(path='compress_tar') + + import os + + def is_within_directory(directory, target): + + abs_directory = os.path.abspath(directory) + abs_target = os.path.abspath(target) + + prefix = os.path.commonprefix([abs_directory, abs_target]) + + return prefix == abs_directory + + def safe_extract(tar, path=".", members=None, *, numeric_owner=False): + + for member in tar.getmembers(): + member_path = os.path.join(path, member.name) + if not is_within_directory(path, member_path): + raise Exception("Attempted Path Traversal in Tar File") + + tar.extractall(path, members, numeric_owner=numeric_owner) + + + safe_extract(tr, path="compress_tar") # tar 파일 내용을 확인하기 with tarfile.open('compress.tar.gz', 'r:gz') as tr: