CVE-2025-6850
📋 TL;DR
CVE-2025-6850 is a critical SQL injection vulnerability in Simple Forum 1.0 that allows remote attackers to execute arbitrary SQL commands via the 'File' parameter in /forum1.php. This affects all users running Simple Forum 1.0, potentially leading to data theft, modification, or deletion. The vulnerability is remotely exploitable without authentication.
💻 Affected Systems
- Simple Forum
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data exfiltration, privilege escalation, and potential remote code execution via database functions.
Likely Case
Unauthorized data access, modification of forum content, and potential user credential theft.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to non-sensitive data.
🎯 Exploit Status
Proof of concept is publicly available on GitHub. SQL injection is well-understood and easily weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://code-projects.org/
Restart Required: No
Instructions:
No official patch available. Consider migrating to supported software or implementing workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize the 'File' parameter before processing
Modify /forum1.php to validate and sanitize user input using prepared statements or parameterized queries
Web Application Firewall Rule
allBlock SQL injection patterns targeting /forum1.php
Add WAF rule: deny requests to /forum1.php containing SQL keywords in parameters
🧯 If You Can't Patch
- Implement network segmentation to restrict access to Simple Forum
- Deploy web application firewall with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Test /forum1.php with SQL injection payloads in the 'File' parameter and observe database errors or unexpected behavior.Check Version:
Check software version in forum configuration files or admin panelVerify Fix Applied:
Attempt SQL injection after implementing fixes and confirm no database errors or unauthorized access occurs.📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in web server logs
- Unusual database queries from web application
- Multiple failed parameter manipulation attempts
Network Indicators:
- HTTP requests to /forum1.php with SQL keywords in parameters
- Unusual database traffic patterns
SIEM Query:
source="web_logs" AND uri="/forum1.php" AND (param="File" AND value CONTAINS "UNION" OR value CONTAINS "SELECT" OR value CONTAINS "INSERT")