CVE-2023-33439
📋 TL;DR
CVE-2023-33439 is an SQL injection vulnerability in Faculty Evaluation System v1.0 that allows attackers to manipulate database queries via the 'id' parameter in the manage_task.php admin page. This affects all users running the vulnerable version of the software, potentially exposing sensitive data or allowing unauthorized database modifications.
💻 Affected Systems
- Sourcecodester Faculty Evaluation System
📦 What is this software?
Faculty Evaluation System by Faculty Evaluation System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data exfiltration, data manipulation, authentication bypass, or remote code execution if database functions allow it.
Likely Case
Unauthorized access to sensitive faculty/student evaluation data, potential privilege escalation, or data corruption.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only error messages or minimal data exposure.
🎯 Exploit Status
Exploitation requires admin authentication but SQL injection is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available. Implement workarounds or manually fix the vulnerable code by adding proper input validation and parameterized queries.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests.
Input Validation
allAdd server-side validation to ensure 'id' parameter contains only numeric values.
🧯 If You Can't Patch
- Restrict access to the /eval/admin/ directory to trusted IP addresses only
- Implement database user with minimal required permissions (read-only if possible)
🔍 How to Verify
Check if Vulnerable:
Test the endpoint with SQL injection payloads like: /eval/admin/manage_task.php?id=1' OR '1'='1Check Version:
Check system documentation or about page for version informationVerify Fix Applied:
Test with same payloads and verify they are rejected or properly handled without SQL errors📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in web server logs
- Unusual database queries from web application user
- Multiple failed login attempts followed by admin access
Network Indicators:
- HTTP requests to /eval/admin/manage_task.php with SQL keywords in parameters
- Unusual database traffic patterns
SIEM Query:
web.url:"*/eval/admin/manage_task.php*" AND (web.param.id:"'" OR web.param.id:"OR" OR web.param.id:"UNION")