Command coming from incoming request

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Metadata

ID: python-django/subprocess-from-request

Language: Python

Severity: Error

Category: Security

CWE: 20

Description

Execute a process using unsanitized and unvalidated user-inputs. The user data should be sanitized and validated before being used to launch a new process.

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Non-Compliant Code Examples

import subprocess

def execute_command(request):
    cmd = request.GET.get("cmd")
    print("foobar")
    subprocess.run(cmd)
    subprocess.call(cmd)
    subprocess.capture_output(cmd)
    subprocess.call(["bash", cmd])

    bli = subprocess.run(cmd)
    bla = subprocess.call(cmd)
    ble = subprocess.capture_output(cmd)
    blo = subprocess.call(["bash", cmd])
    blip = subprocess.call("bash {0}".format(cmd))
    blop = subprocess.call("bash " + cmd)

Compliant Code Examples

import subprocess

def execute_command(request):
    cmd = request.GET.get("cmd")
    print("foobar")
    subprocess.run(shlex.escape(cmd))
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