CVE-2023-29627
📋 TL;DR
Online Pizza Ordering v1.0 contains an arbitrary file upload vulnerability that allows attackers to upload malicious files to the server. This can lead to remote code execution, potentially compromising the entire server. Anyone running this specific version of the software is affected.
💻 Affected Systems
- Online Pizza Ordering
📦 What is this software?
Online Pizza Ordering by Online Pizza Ordering Project
⚠️ Risk & Real-World Impact
Worst Case
Complete server takeover with attacker gaining full control, data theft, ransomware deployment, and lateral movement to other systems.
Likely Case
Webshell deployment leading to data exfiltration, defacement, or use as a foothold for further attacks.
If Mitigated
File uploads blocked or properly validated, preventing malicious file execution.
🎯 Exploit Status
Simple file upload bypass techniques can be used. Public exploit code exists in GitHub repositories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch exists. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Implement File Upload Validation
allAdd server-side validation to restrict file uploads to specific extensions and verify file content.
# Add to upload handler: validate file extension, MIME type, and content
Web Application Firewall Rules
allConfigure WAF to block malicious file uploads and suspicious POST requests.
# WAF rule to block file uploads with dangerous extensions (php, asp, jsp, etc.)
🧯 If You Can't Patch
- Disable file upload functionality entirely if not required.
- Implement strict network segmentation to isolate the vulnerable system.
🔍 How to Verify
Check if Vulnerable:
Attempt to upload a file with dangerous extension (e.g., .php) to the upload endpoint. If accepted without validation, system is vulnerable.Check Version:
Check application version in admin panel or configuration files.Verify Fix Applied:
Test file upload with malicious extensions; should be rejected with proper error messages.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with suspicious extensions
- POST requests to upload endpoints with executable files
- Webshell access logs
Network Indicators:
- HTTP POST requests with file uploads to vulnerable endpoints
- Outbound connections from web server to unknown IPs
SIEM Query:
source="web_logs" AND (uri="/upload" OR uri="*upload*") AND (file_extension="php" OR file_extension="asp" OR file_extension="jsp")🔗 References
- https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/2023/Online-Pizza-Ordering-1.0
- https://portswigger.net/web-security/file-upload
- https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/2023/Online-Pizza-Ordering-1.0
- https://portswigger.net/web-security/file-upload
