system: You are an expert security code reviewer. You will be shown a source code file along with a multi-select question listing several CWE (Common Weakness Enumeration) categories. Your task is to identify which of the listed CWEs are present in the code.

OUTPUT FORMAT: Respond with the letter(s) of all correct options, sorted alphabetically and comma-separated, wrapped in a single \boxed{...}. Examples: `\boxed{A}` for one correct, `\boxed{A,C}` for two, `\boxed{A,C,E}` for three. Output the boxed answer ONLY -- no explanation, no other text.

user: ```python
#!/usr/bin/env python

"""
A simple service

Based on version from Michael Hausenblas, http://mhausenblas.info/#i
@author: Jayaprakash Subranmanian
@since: 2019-10-27
"""

import logging
import os
import platform

import distro
import random
import sys
import time

import tornado.ioloop
import tornado.web
from tornado.escape import json_encode

DEBUG = True

##############################################################################
# The following enviroment variables can be overridden
# to simulate different behaviour of the simple service:

# By default simple service serves on 9876 but you can
# make it listen on a different port by setting the env
# variable `PORT0` (also: it listens on all network interfaces,
# i.e. 0.0.0.0).
PORT = os.getenv('PORT0', 9876)

# By default simple service reports this value in
# the /endpoint0 unless overridden by below env variable.
VERSION = os.getenv('DOCKER_TAG', "0.1.0")

# By default the `/health` endpoint returns a HTTP code 200
# immediately but you can define the range with the following
# env variables.
#
# Examples:
# HEALTH_MIN=1000 HEALTH_MAX=2000 ... delays between 1 sec and 3 sec
# HEALTH_MAX=500                  ... delays up to 0.5 sec
HEALTH_MIN = os.getenv('HEALTH_MIN', 0)  # in milliseconds
HEALTH_MAX = os.getenv('HEALTH_MAX', 0)  # in milliseconds

if DEBUG:
    FORMAT = "%(asctime)-0s %(levelname)s %(message)s [at line %(lineno)d]"
    logging.basicConfig(level=logging.DEBUG, format=FORMAT, datefmt="%Y-%m-%dT%I:%M:%S")
else:
    FORMAT = "%(asctime)-0s %(message)s"
    logging.basicConfig(level=logging.INFO, format=FORMAT, datefmt="%Y-%m-%dT%I:%M:%S")


def system_info():
    sys_name = platform.system()

    if sys_name == "Linux":
        dist = distro.linux_distribution()
    elif sys_name == "Darwin":
        dist = platform.mac_ver()[0]
    else:
        dist = platform.platform()

    return {
        "system": sys_name,
        "machine": platform.machine(),
        "dist": dist
    }


class Endpoint0(tornado.web.RequestHandler):
    def get(self):
        """
        Handles `/endpoint0` resource.
        """
        try:
            logging.info("/endpoint0 serving from %s has been invoked from %s", self.request.host,
                         self.request.remote_ip)
            self.set_header("Content-Type", "application/json")
            self.write(json_encode(
                {
                    "version": VERSION,
                    "host": self.request.host,
                    "result": "all is well"
                }
            ))
            self.finish()
        except Exception as e:
            logging.debug(e)
            self.set_status(404)


class Health(tornado.web.RequestHandler):
    def get(self):
        """
        Handles `/health` resource.
        """
        try:
            logging.info("/health serving from %s has been invoked from %s", self.request.host, self.request.remote_ip)
            self.set_header("Content-Type", "application/json")
            self.write(json_encode(
                {
                    "healthy": True
                }
            ))

            if HEALTH_MAX > HEALTH_MIN and HEALTH_MIN >= 0:  # make sure no shenanigans take place
                delay_response = random.randrange(float(HEALTH_MIN), float(HEALTH_MAX))
                time.sleep(delay_response / 1000.0)
            self.finish()
        except Exception as e:
            logging.debug(e)
            self.set_status(404)


class Info(tornado.web.RequestHandler):
    def get(self):
        """
        Handles `/info` resource.
        """
        try:
            logging.info("/info serving from %s has been invoked from %s", self.request.host, self.request.remote_ip)
            self.set_header("Content-Type", "application/json")
            self.write(json_encode(
                {
                    "version": VERSION,
                    "host": self.request.host,
                    "from": self.request.remote_ip,
                    "host_info": system_info()
                }
            ))
            self.finish()
        except Exception as e:
            logging.debug(e)
            self.set_status(404)


class Environment(tornado.web.RequestHandler):
    def get(self):
        """
        Handles `/env` resource.
        """
        try:
            logging.info("/env serving from %s has been invoked from %s", self.request.host, self.request.remote_ip)
            self.set_header("Content-Type", "application/json")
            self.write(json_encode(
                {
                    "version": VERSION,
                    "env": dict(os.environ),
                }
            ))
            self.finish()
        except Exception as e:
            logging.debug(e)
            self.set_status(404)


if __name__ == "__main__":
    app = tornado.web.Application([
        (r"/endpoint0", Endpoint0),
        (r"/health", Health),
        (r"/info", Info),
        (r"/env", Environment)
    ])
    app.listen(PORT, address='0.0.0.0')
    logging.info("Simple Service (v%s) listening on port %s", VERSION, PORT)
    tornado.ioloop.IOLoop.current().start()

```

Which of the following CWE vulnerability categories are present in this code? Multiple options may be correct.

  A) CWE-215: Insertion of Sensitive Information Into Debugging Code
  B) CWE-326: Inadequate Encryption Strength
  C) CWE-117: Improper Output Neutralization for Logs
  D) CWE-614: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute
  E) CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  F) CWE-943: Improper Neutralization of Special Elements in Data Query Logic
Answer: C