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CVE-2007-4559 Patch #3

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CVE-2007-4559 Patch #3

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21 changes: 20 additions & 1 deletion download.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,26 @@
url = "https://physionet.org/files/challenge-2012/1.0.0/set-a.tar.gz?download"
wget.download(url, out="data")
with tarfile.open("data/set-a.tar.gz", "r:gz") as t:
t.extractall(path="data/physio")
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(t, path="data/physio")

elif sys.argv[1] == "pm25":
url = "https://www.microsoft.com/en-us/research/wp-content/uploads/2016/06/STMVL-Release.zip"
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