defmodule Sobelow.CI.System do
@moduledoc """
# Command Injection in `System.cmd`
This submodule of the `CI` module checks for Command Injection
vulnerabilities through usage of the `System.cmd` function.
Ensure the the command passed to `System.cmd` is not user-controlled.
`System.cmd` Injection checks can be ignored with the following command:
$ mix sobelow -i CI.System
"""
@uid 2
@finding_type "CI.System: Command Injection in `System.cmd`"
use Sobelow.Finding
def run(fun, meta_file) do
confidence = if !meta_file.is_controller?, do: :low
Finding.init(@finding_type, meta_file.filename, confidence)
|> Finding.multi_from_def(fun, parse_def(fun))
|> Enum.each(&Print.add_finding(&1))
end
def parse_def(fun) do
Parse.get_fun_vars_and_meta(fun, 0, :cmd, [:System])
end
end