CVE-2024-5278
📋 TL;DR
This vulnerability allows attackers to upload malicious files to the gaizhenbiao/chuanhuchatgpt application due to insufficient file validation. Attackers can upload HTML files with XSS payloads or Python scripts, potentially leading to stored XSS attacks and remote code execution. Anyone running the vulnerable version of this software is affected.
💻 Affected Systems
- gaizhenbiao/chuanhuchatgpt
📦 What is this software?
Chuanhuchatgpt by Gaizhenbiao
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution on the server hosting the application, allowing complete system compromise.
Likely Case
Stored XSS attacks leading to session hijacking, credential theft, or defacement of the application.
If Mitigated
Limited impact with proper file validation and server hardening in place.
🎯 Exploit Status
The vulnerability is simple to exploit with basic HTTP requests to the /upload endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit 22007a77f037c0cf76180f9b73a8d19e87dad02e
Vendor Advisory: https://github.com/gaizhenbiao/chuanhuchatgpt/commit/22007a77f037c0cf76180f9b73a8d19e87dad02e
Restart Required: Yes
Instructions:
1. Pull the latest code from the GitHub repository. 2. Apply commit 22007a77f037c0cf76180f9b73a8d19e87dad02e. 3. Restart the application service.
🔧 Temporary Workarounds
Disable file upload endpoint
allTemporarily disable the /upload endpoint in the application configuration or web server.
# Modify application configuration to remove/disable upload functionality
Implement web application firewall rules
linuxBlock file uploads with dangerous extensions at the WAF or reverse proxy level.
# Example nginx rule to block certain file uploads
location /upload {
deny all;
}
🧯 If You Can't Patch
- Implement strict file type validation at the application level before accepting uploads.
- Run the application in a sandboxed environment with minimal privileges to limit RCE impact.
🔍 How to Verify
Check if Vulnerable:
Attempt to upload a file with a .html or .py extension to the /upload endpoint. If successful without validation, the system is vulnerable.Check Version:
Check the git commit hash or version metadata in the application.Verify Fix Applied:
Attempt the same upload test after patching. The upload should be rejected or properly validated.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /upload endpoint
- Uploads of .html, .py, or other executable file types
Network Indicators:
- HTTP POST requests to /upload with suspicious file content
SIEM Query:
source="web_server" AND (uri="/upload" AND (file_extension="html" OR file_extension="py"))