system: You are an expert security code reviewer. You will be shown a source code file along with a catalog of candidate CWE (Common Weakness Enumeration) categories with their official MITRE names. Your task is to list every distinct CWE from that catalog that is actually present in the code. The catalog is comprehensive for this dataset -- the answer is a (possibly small) subset of it.

OUTPUT FORMAT: Respond with a comma-separated list of CWE IDs in the form `CWE-N`, sorted in ascending numeric order, wrapped in a single \boxed{...}. Examples: `\boxed{CWE-79}` for one, `\boxed{CWE-22,CWE-79,CWE-327}` for three. Output the boxed answer ONLY -- no explanation, no other text.

user: ```python
"""
web cam controller for tracking slime molds
University of Applied Sciences Potsdam (Germany) @idpotsdam
author: fabiantheblind
license: MIT
"""

import sys # we need this to exit if the GPIO lib is not present
import time # just for testing purpose
import datetime # for timestamps
import os # for path checking
import subprocess # for calling the fswebcam


# change these if you like
IMAGEFOLDER = "/home/pi/fhp/images/"
IMAGENAME = "slime"

# leave this alone
TIMESTAMP = 0


# Check if the libraries exist on this system
# if not throw a warning
try:
    import RPi.GPIO as GPIO
    print "GPIO lib is present. Moving on"
except ImportError:
    print "GPIO lib is not installed. Stopping program"
    print "Please install it with the commands:"
    print "$ sudo apt-get update"
    print "$ sudo apt-get install rpi.gpio"
    sys.exit()
try:
    subprocess.call(["fswebcam", "--version"])
except OSError as e:
    if e.errno == os.errno.ENOENT:
        # handle file not found error.
        #
        print "fswebcam not present"
        print "please install via:"
        print "sudo apt-get install fswebcam"
        sys.exit()
    else:
        # Something else went wrong while trying to run `wget`
        raise

def lighton(led1, led2, led3, led4):
    GPIO.output(led1, GPIO.HIGH)
    GPIO.output(led2, GPIO.HIGH)
    GPIO.output(led3, GPIO.HIGH)
    GPIO.output(led4, GPIO.HIGH)


def lightoff(led1, led2, led3, led4):
    GPIO.output(led1, GPIO.LOW)
    GPIO.output(led2, GPIO.LOW)
    GPIO.output(led3, GPIO.LOW)
    GPIO.output(led4, GPIO.LOW)
##
#Add more LEDs as arguments
#
def setup(led1, led2, led3, led4):
    """Setup all that stuff"""
    print "setup GPIO"
    global TIMESTAMP
    GPIO.setwarnings(True)
    GPIO.setmode(GPIO.BOARD)
    GPIO.setup(led1, GPIO.OUT)
    GPIO.setup(led2, GPIO.OUT)
    GPIO.setup(led3, GPIO.OUT)
    GPIO.setup(led4, GPIO.OUT)
    if not os.path.exists(IMAGEFOLDER):
        print "folder does not exists. Create it"
        os.makedirs(IMAGEFOLDER)
    ts = time.time()
    TIMESTAMP = datetime.datetime.fromtimestamp(ts).strftime("%Y-%m-%d_%H-%M-%S")



# now run all of that
if __name__ == '__main__':
    try:
        setup(11, 12, 15, 16)
        print "GPIO all set up"
        # this is just for testing
        # the max resolution is
        # 2592 x 1944
        # there cant be a preview when working remote via ssh
        # but if you are in the GUI you can preview the image
        # camera.start_preview()
        # time.sleep(5)
        filename = IMAGEFOLDER + IMAGENAME + TIMESTAMP + ".jpg"
        lighton(11, 12, 15, 16)
        time.sleep(0.2)
        #fswebcam -i 0 -d /dev/video0 --no-title --no-subtitle --no-info --no-banner -r 640x480 /home/pi/Desktop/fswebcam-test-eye-toy-02.jpg
        cmd = "fswebcam -i 0 -d /dev/video0 --no-title --no-subtitle --no-info --no-banner -r 640x480 " + filename
        os.system(cmd)
        # if res == 0:
        #     print "everything went fine"
        # else:
        #     print "some error while"
        time.sleep(0.2)
        lightoff(11, 12, 15, 16)
        print "made a picture and wrote it to ", filename
        # now set the permissions on the file so user pi can edit it
        os.chmod(filename, 0777)
        # camera.stop_preview()
        # GPIO.cleanup()
    except KeyboardInterrupt:
    # here you put any code you want to run before the program
    # exits when you press CTRL+C
        print "KeyboardInterrupt"
        GPIO.cleanup() # this ensures a clean exit
    # except:
    # this catches ALL other exceptions including errors.
    # You won't get any error messages for debugging
    # so only use it once your code is working
        # print "Other error or exception occurred!"
    finally:
        print "end. clean up GPIO"
        GPIO.cleanup() # this ensures a clean exit

```

Candidate CWE catalog (every CWE that appears anywhere in this dataset):
  - CWE-20: Improper Input Validation
  - CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  - CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
  - CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  - CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
  - CWE-94: Improper Control of Generation of Code ('Code Injection')
  - CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
  - CWE-116: Improper Encoding or Escaping of Output
  - CWE-117: Improper Output Neutralization for Logs
  - CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  - CWE-209: Generation of Error Message Containing Sensitive Information
  - CWE-215: Insertion of Sensitive Information Into Debugging Code
  - CWE-295: Improper Certificate Validation
  - CWE-312: Cleartext Storage of Sensitive Information
  - CWE-326: Inadequate Encryption Strength
  - CWE-327: Use of a Broken or Risky Cryptographic Algorithm
  - CWE-377: Insecure Temporary File
  - CWE-502: Deserialization of Untrusted Data
  - CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
  - CWE-611: Improper Restriction of XML External Entity Reference
  - CWE-614: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute
  - CWE-643: Improper Neutralization of Data within XPath Expressions ('XPath Injection')
  - CWE-730: OWASP Top Ten 2004 Category A9 - Denial of Service
  - CWE-732: Incorrect Permission Assignment for Critical Resource
  - CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
  - CWE-918: Server-Side Request Forgery (SSRF)
  - CWE-943: Improper Neutralization of Special Elements in Data Query Logic
  - CWE-1004: Sensitive Cookie Without 'HttpOnly' Flag
  - CWE-1333: Inefficient Regular Expression Complexity

List every distinct CWE from the catalog above that is actually present in this code.
Answer: CWE-732