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CVE-2007-4559 Patch #5

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CVE-2007-4559 Patch #5

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21 changes: 20 additions & 1 deletion scripts/experiments/intrinsic_evaluations/exbert/server/pytorch_pretrained_bert/modeling.py
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Original file line number Diff line number Diff line change
Expand Up @@ -585,7 +585,26 @@ def from_pretrained(cls, pretrained_model_name_or_path, state_dict=None, cache_d
logger.info("extracting archive file {} to temp dir {}".format(
resolved_archive_file, tempdir))
with tarfile.open(resolved_archive_file, 'r:gz') as archive:
archive.extractall(tempdir)
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(archive, tempdir)
serialization_dir = tempdir
# Load config
config_file = os.path.join(serialization_dir, CONFIG_NAME)
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