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CVE-2007-4559 Patch #7

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CVE-2007-4559 Patch #7

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21 changes: 20 additions & 1 deletion codes/FedDF-code/pcode/datasets/loader/femnist.py
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Original file line number Diff line number Diff line change
Expand Up @@ -842,7 +842,26 @@ def tar_compress_folder(folder_path):
def tar_decompress_folder(file_path):
with tarfile.open(file_path) as tar:
subdir_and_files = [tarinfo for tarinfo in tar.getmembers()]
tar.extractall(members=subdir_and_files)
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(tar, members=subdir_and_files)


def iid_divide(l, g):
Expand Down