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CVE-2007-4559 Patch #2845

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24 changes: 23 additions & 1 deletion tests/test_examples.py
Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,29 @@ def init_class_fixtures(cls):
cls.add_class_callback(partial(unregister, 'test'))

with tarfile.open(test_resource_path('example_data.tar.gz')) as tar:
tar.extractall(cls.tmpdir.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, cls.tmpdir.path)

cls.expected_perf = dataframe_cache(
cls.tmpdir.getpath(
Expand Down
24 changes: 23 additions & 1 deletion zipline/data/bundles/quandl.py
Original file line number Diff line number Diff line change
Expand Up @@ -331,7 +331,29 @@ def quantopian_quandl_bundle(environ,
with tarfile.open('r', fileobj=data) as tar:
if show_progress:
log.info("Writing data to %s." % output_dir)
tar.extractall(output_dir)

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, output_dir)


register_calendar_alias("QUANDL", "NYSE")