CVE-2020-23966
📋 TL;DR
This SQL injection vulnerability in Victor CMS 1.0 allows attackers to execute arbitrary SQL commands through the post parameter in GET requests to /post.php. Attackers can potentially read, modify, or delete database content, and in some configurations execute system commands. Any organization running Victor CMS 1.0 is affected.
💻 Affected Systems
- Victor CMS
📦 What is this software?
Victor Cms by Victor Cms Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, and potential remote code execution through database functions, resulting in full system takeover.
Likely Case
Database information disclosure, data manipulation, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only allowing data viewing without modification.
🎯 Exploit Status
Simple SQL injection via GET parameter requires minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Check if Victor CMS is installed. 2. If using version 1.0, consider migrating to alternative CMS. 3. Apply workarounds listed below.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize the post parameter before processing
Modify post.php to include: $post_id = filter_var($_GET['post'], FILTER_SANITIZE_NUMBER_INT);
Web Application Firewall Rule
allBlock SQL injection patterns in the post parameter
Add WAF rule: SecRule ARGS:post "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Block external access to /post.php using network firewall rules
- Implement database user with minimal permissions (read-only if possible)
🔍 How to Verify
Check if Vulnerable:
Test with payload: /post.php?post=1' OR '1'='1Check Version:
Check CMS version in admin panel or readme filesVerify Fix Applied:
Test with same payload after applying fixes - should return error or no data📡 Detection & Monitoring
Log Indicators:
- GET requests to /post.php with SQL keywords in parameters
- Database error logs showing SQL syntax errors
Network Indicators:
- HTTP requests containing SQL injection patterns in GET parameters
SIEM Query:
source="web_logs" AND uri_path="/post.php" AND (query_string="*UNION*" OR query_string="*SELECT*" OR query_string="*OR*'1'='1*")