CVE-2022-0528
📋 TL;DR
This CVE describes a Server-Side Request Forgery (SSRF) vulnerability in the Uppy file uploader library. Attackers can exploit this to make the server send unauthorized requests to internal or external systems. Users of Uppy versions prior to 3.3.1 are affected.
💻 Affected Systems
- Uppy
📦 What is this software?
Uppy by Transloadit
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal services, exfiltrate sensitive data, or perform internal network reconnaissance leading to further compromise.
Likely Case
Unauthorized access to internal HTTP services, potential data leakage from internal endpoints, or abuse of server resources.
If Mitigated
Limited impact with proper network segmentation and input validation, potentially only causing denial of service.
🎯 Exploit Status
SSRF vulnerabilities are commonly exploited and proof-of-concept details are available in public references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.3.1
Vendor Advisory: https://github.com/transloadit/uppy/commit/267c34045a1e62c98406d8c31261c604a11e544a
Restart Required: No
Instructions:
1. Update Uppy dependency to version 3.3.1 or later. 2. Run npm update uppy or yarn upgrade uppy. 3. Test file upload functionality.
🔧 Temporary Workarounds
Input Validation
allImplement strict validation of user-supplied URLs before processing.
Network Segmentation
allRestrict server outbound connections to only necessary destinations.
🧯 If You Can't Patch
- Implement web application firewall rules to block SSRF patterns
- Monitor outbound network traffic for unusual requests from the application server
🔍 How to Verify
Check if Vulnerable:
Check package.json or lock file for Uppy version below 3.3.1Check Version:
npm list uppy or check package.json for "uppy" versionVerify Fix Applied:
Confirm Uppy version is 3.3.1 or higher in package.json📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from application server
- Requests to internal IP addresses or localhost
Network Indicators:
- HTTP requests to unexpected destinations from application server
- Requests to internal network segments
SIEM Query:
source="application-server" AND (dest_ip=127.0.0.1 OR dest_ip=10.* OR dest_ip=172.16.* OR dest_ip=192.168.*)