CVE-2023-53926
📋 TL;DR
PHPJabbers Simple CMS 5.0 contains a SQL injection vulnerability in the 'column' parameter that allows remote attackers to execute arbitrary SQL commands. This enables attackers to extract, modify, or delete database information, potentially compromising the entire application. All users running Simple CMS 5.0 are affected.
💻 Affected Systems
- PHPJabbers Simple CMS
📦 What is this software?
Simple Cms by Phpjabbers
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data destruction, and potential remote code execution if database functions allow file operations.
Likely Case
Extraction of sensitive data including user credentials, personal information, and administrative access leading to full system compromise.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing successful exploitation.
🎯 Exploit Status
Exploit code is publicly available and requires minimal technical skill to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.phpjabbers.com/faq.php
Restart Required: No
Instructions:
1. Check vendor website for security updates
2. Apply any available patches
3. Verify fix by testing the vulnerable endpoint
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to reject malicious input in the 'column' parameter
Modify index.php to validate column parameter against allowed values
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns
Add WAF rule: deny requests containing SQL keywords in column parameter
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries in the affected code
- Deploy the application behind a WAF with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Test the index.php endpoint with SQL injection payloads in the column parameterCheck Version:
Check CMS version in admin panel or configuration filesVerify Fix Applied:
Attempt SQL injection after applying fixes and verify no database errors or unexpected behavior📡 Detection & Monitoring
Log Indicators:
- Unusual database queries
- SQL syntax errors in logs
- Multiple requests with SQL keywords in parameters
Network Indicators:
- HTTP requests containing SQL injection patterns in column parameter
SIEM Query:
source="web_logs" AND (url="*index.php*" AND param="*column=*" AND (content="*UNION*" OR content="*SELECT*" OR content="*INSERT*" OR content="*DELETE*"))