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Presentations, training modules, and other education materials from Duo Security's Application Security team.

License: BSD 3-Clause "New" or "Revised" License

Dockerfile 0.29% Python 2.24% Ruby 0.16% JavaScript 41.05% HTML 24.64% CSS 31.55% PowerShell 0.07%

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Mass Assignment app not working (code doesn't exist)

Hi, I tried to run first lab - Python AppSec Mass Assignment, but the Flask application in lab does not start. The issue is application code doesn't get copied to the server, and boot script reports:

~/web$ boot
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
App is booting... 
chdir: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
/home/whitehat/boot.sh: line 10: cd: /home/whitehat/web: No such file or directory
Traceback (most recent call last):
  File "/home/whitehat/venvs/env/lib/python3.5/site-packages/gunicorn/util.py", line 436, in getcwd
    a = os.stat(os.environ['PWD'])
FileNotFoundError: [Errno 2] No such file or directory: '/home/whitehat/web'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/whitehat/venvs/env/bin/gunicorn", line 5, in <module>
    from gunicorn.app.wsgiapp import run
  File "/home/whitehat/venvs/env/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 9, in <module>
    from gunicorn.app.base import Application
  File "/home/whitehat/venvs/env/lib/python3.5/site-packages/gunicorn/app/base.py", line 13, in <module>
    from gunicorn.config import Config, get_default_config_file
  File "/home/whitehat/venvs/env/lib/python3.5/site-packages/gunicorn/config.py", line 1003, in <module>
    class Chdir(Setting):
  File "/home/whitehat/venvs/env/lib/python3.5/site-packages/gunicorn/config.py", line 1008, in Chdir
    default = util.getcwd()
  File "/home/whitehat/venvs/env/lib/python3.5/site-packages/gunicorn/util.py", line 443, in getcwd
    cwd = os.getcwd()
FileNotFoundError: [Errno 2] No such file or directory
Gunicorn failed to start

View /home/whitehat/error.log for details.

Indeed ~/web dir is empty: