64 lines
2.5 KiB
Python
64 lines
2.5 KiB
Python
# Copyright 2016 Intel
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import syntribos
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from syntribos._i18n import _
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from syntribos.checks import has_string as has_string
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from syntribos.checks import time_diff as time_diff
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from syntribos.tests.fuzz import base_fuzz
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class JSONDepthOverflowBody(base_fuzz.BaseFuzzTestCase):
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"""Test for json depth overflow in HTTP body."""
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test_name = "JSON_DEPTH_OVERFLOW_BODY"
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test_type = "data"
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failure_keys = [
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"maximum recursion depth exceeded",
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"RuntimeError",
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]
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@classmethod
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def _get_strings(cls, file_name=None):
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return [
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'{"id":' * 1000 + '42' + '}' * 1000,
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'{"id":' * 10000 + '4242' + '}' * 10000
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]
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def test_case(self):
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self.run_default_checks()
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self.test_signals.register(has_string(self))
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if "FAILURE_KEYS_PRESENT" in self.test_signals:
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failed_strings = self.test_signals.find(
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slugs="FAILURE_KEYS_PRESENT")[0].data["failed_strings"]
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self.register_issue(
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defect_type="json_depth_limit_strings",
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severity=syntribos.MEDIUM,
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confidence=syntribos.HIGH,
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description=(
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"The string(s): '{0}', is known to be commonly "
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"returned after a successful overflow of the json"
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" parsers depth limit. This could possibly "
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"result in a dos vulnerability.").format(failed_strings))
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self.diff_signals.register(time_diff(self))
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if "TIME_DIFF_OVER" in self.diff_signals:
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self.register_issue(
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defect_type="json_depth_timing",
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severity=syntribos.MEDIUM,
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confidence=syntribos.LOW,
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description=(_("The time it took to resolve a request "
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"was too long compared to the "
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"baseline request. This could indicate a "
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"vulnerability to denial of service attacks.")))
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