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CVE-2007-4559 Patch #1

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CVE-2007-4559 Patch #1

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ab86ebb
Adding tarfile member sanitization to extractall()
PatchTester Oct 2, 2022
c7f397e
Adding numeric_owner as keyword arguement
TrellixVulnTeam Oct 4, 2022
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24 changes: 23 additions & 1 deletion src/mlops-modelbuild/pipelines/heartdisease/evaluate.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,29 @@
logger.info("Starting evaluation.")
model_path = "/opt/ml/processing/model/model.tar.gz"
with tarfile.open(model_path) as tar:
tar.extractall(path=".")

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(tar, path=".")

logger.info("Loading model.")
model_file_name = "pipeline_model.joblib"
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