CVE-2021-25205
📋 TL;DR
CVE-2021-25205 is a critical SQL injection vulnerability in SourceCodester E-Commerce Website V 1.0 that allows remote attackers to execute arbitrary SQL statements via the update parameter in empViewUpdate.php. This affects all deployments of this specific e-commerce software version, potentially compromising the entire database and application.
💻 Affected Systems
- SourceCodester E-Commerce Website
📦 What is this software?
E Commerce Website by E Commerce Website Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, authentication bypass, and potential remote code execution if database functions allow it.
Likely Case
Unauthorized data access, modification, or deletion of e-commerce data including customer information, orders, and payment details.
If Mitigated
Limited impact with proper input validation, parameterized queries, and database permissions restricting dangerous operations.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repository. SQL injection via URL parameter is straightforward to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider replacing with alternative e-commerce software or implementing custom fixes.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to sanitize the update parameter before processing
Modify empViewUpdate.php to validate/sanitize input using PHP filter functions
Parameterized Query Implementation
allReplace direct SQL concatenation with prepared statements
Rewrite SQL queries in empViewUpdate.php to use PDO or mysqli prepared statements
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block SQL injection patterns
- Restrict access to empViewUpdate.php via network controls or authentication
🔍 How to Verify
Check if Vulnerable:
Test by sending SQL injection payloads to the update parameter in empViewUpdate.php endpointCheck Version:
Check software version in admin panel or configuration filesVerify Fix Applied:
Verify that SQL injection payloads no longer execute and return error messages📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple requests to empViewUpdate.php with suspicious parameters
Network Indicators:
- HTTP requests containing SQL keywords (SELECT, UNION, etc.) in URL parameters
SIEM Query:
web.url:*empViewUpdate.php* AND (web.param.update:*SELECT* OR web.param.update:*UNION* OR web.param.update:*OR*)