Call of a spawn process without sanitization

Docs > Code Analysis > Static Analysis Rules > Call of a spawn process without sanitization

Cette page n'est pas encore disponible en français, sa traduction est en cours.
Si vous avez des questions ou des retours sur notre projet de traduction actuel, n'hésitez pas à nous contacter.

Metadata

ID: python-security/os-spawn

Language: Python

Severity: Error

Category: Security

Description

Detect unsafe shell execution with the os module. We should ensure the command is safe before execution. Use shlex to sanitize user inputs.

Learn More

Non-Compliant Code Examples

import os

directory = "/tmp"

# Use of unsanitized data to create a process
os.spawnl(os.P_WAIT, "/bin/ls")
os.spawnle(os.P_WAIT, "/bin/ls")
os.spawnlp(os.P_WAIT, "/bin/ls")
os.spawnlpe(os.P_WAIT, "/bin/ls")
os.spawnv(os.P_WAIT, "/bin/ls")
os.spawnve(os.P_WAIT, "/bin/ls")
os.spawnvp(os.P_WAIT, "/bin/ls")
os.spawnvpe(os.P_WAIT, "/bin/ls")


os.spawnvpe(os.P_WAIT, "/bin/ls " + directory)

Compliant Code Examples

import os
import shlex

# Use of shlex() to sanitize data
os.spawnl(os.P_WAIT, shlex.escape("/bin/ls"))