CVE-2024-47167

SSRF vulnerability in Gradio allows attacks via user-controlled URLs.

• CVSS 6.9
• CWE-918
• Input Validation and Sanitization
• Remote

Gradio is an open-source Python package designed for quick prototyping. This vulnerability relates to **Server-Side Request Forgery (SSRF)** in the `/queue/join` endpoint. Gradio’s `async_save_url_to_cache` function allows attackers to force the Gradio server to send HTTP requests to user-controlled URLs. This could enable attackers to target internal servers or services within a local network and possibly exfiltrate data or cause unwanted internal requests. Additionally, the content from these URLs is stored locally, making it easier for attackers to upload potentially malicious files to the server. This impacts users deploying Gradio servers that use components like the Video component which involve URL fetching. Users are advised to upgrade to `gradio>=5` to address this issue. As a workaround, users can disable or heavily restrict URL-based inputs in their Gradio applications to trusted domains only. Additionally, implementing stricter URL validation (such as allowinglist-based validation) and ensuring that local or internal network addresses cannot be requested via the `/queue/join` endpoint can help mitigate the risk of SSRF attacks.

CVE

CVE-2024-47167

CWE

CWE-918

CVSS base score

6.9

Published

2024-10-10

OWASP

A10 Insufficient Logging & Monitoring

Orthogonal defect classification

Function

Code defect classification

Incorrect Functionality

Category

Input Validation and Sanitization

Subcategory

Server-Side Request Forgery (SSRF)

Accessibility scope

Remote

Impact

Data Theft

Affected component

Gradio

Fixed by upgrading

Yes

Solution

Upgrade to `gradio>=5` and implement allowlist-based URL validation.

import gradio as gr
import requests

def fetch_url(url):
    response = requests.get(url)
    return response.text

iface = gr.Interface(fn=fetch_url, inputs="text", outputs="text")
iface.launch()

import gradio as gr
import requests
from urllib.parse import urlparse

def is_valid_url(url):
    try:
        parsed_url = urlparse(url)
        if parsed_url.scheme not in ["http", "https"]:
            return False
        if parsed_url.hostname in ['localhost', '127.0.0.1', '0.0.0.0']:
            return False
        return True
    except ValueError:
        return False

def fetch_url(url):
    if not is_valid_url(url):
        return "Invalid URL. Please provide a valid HTTP(S) URL."

    try:
        response = requests.get(url, timeout=5)
        response.raise_for_status()
        return response.text
    except requests.exceptions.RequestException as e:
        return f"Error fetching URL: {str(e)}"

iface = gr.Interface(fn=fetch_url, inputs="text", outputs="text")
iface.launch()

http://localhost:8080/admin

@misc{vaitp:cve202447167,
  title        = {{SSRF vulnerability in Gradio allows attacks via user-controlled URLs.}},
  author       = {Bogaerts, Fr\'ed\'eric and Ivaki, Naghmeh and Fonseca, Jos\'e},
  year         = {2024},
  note         = {VAITP Python Vulnerability Dataset, entry CVE-2024-47167},
  howpublished = {\url{https://netpack.pt/vaitp/vulnerability/CVE-2024-47167/}}
}