(Note: Exact path varies by version; check the challenge description in Juice Shop). SSRF is rarely an end in itself. In Juice Shop, it's a proof-of-concept, but in real systems, combine SSRF with other vulnerabilities: 1. Cloud Metadata Extraction If Juice Shop were deployed on AWS with a misconfigured IMDSv1:
"url": "http://10.0.0.1:22" A fast "Connection refused" means port closed. A timeout or slow response means open. If the request library supports file:// :
But the real SSRF is not directly in the Order ID. It's in the or "Complaint" feature, depending on the version. In the standard Juice Shop SSRF challenge, the vulnerable endpoint is: juice shop ssrf
Using a tool like curl or Burp Repeater:
); );
The critical mistake: . Exploitation: The Juice Shop SSRF Challenge To solve the Juice Shop SSRF challenge (usually titled "Who's the real unicorn?" or "SSRF – Request Bomb"), you must make the server fetch a resource from a location it shouldn't. Step 1: Reconnaissance with Localhost First, test if the server will fetch from localhost . Use Burp Suite or your browser's developer tools to intercept the image upload request.
// Vulnerable code example (simplified from Juice Shop source) app.post('/api/image/uploads', (req, res) => const imageUrl = req.body.url; // No validation of the URL scheme or domain request.get(imageUrl, (error, response, body) => if (error) res.status(400).send('Failed to fetch image'); else // Process the image... res.send('Image uploaded'); (Note: Exact path varies by version; check the
gopher://internal-redis:6379/_*2%0d%0a$4%0d%0aINFO%0d%0a This could dump internal databases. Leverage timing attacks. For each port:
const dns = require('dns').promises; const ip = await dns.lookup(urlObj.hostname); if (isPrivateIP(ip.address)) throw new Error('Blocked'); The SSRF vulnerability in OWASP Juice Shop is small but elegant. It demonstrates a single line of missing validation leading to a complete breach of network segmentation. For penetration testers, mastering SSRF means understanding that the server is just another user—one with far more privileges. Cloud Metadata Extraction If Juice Shop were deployed
POST /api/ImageUploads