CVE-2021-44090
📋 TL;DR
This SQL injection vulnerability in Sourcecodester Online Reviewer System 1.0 allows attackers to execute arbitrary SQL commands via the password parameter. Attackers can potentially bypass authentication, access or modify database contents, and gain unauthorized system access. All deployments of this specific software version are affected.
💻 Affected Systems
- Sourcecodester Online Reviewer System
📦 What is this software?
Sourcecodester Online Reviewer System by Sourcecodester Online Reviewer System Project
View all CVEs affecting Sourcecodester Online Reviewer System →
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, authentication bypass, and potential remote code execution if database permissions allow.
Likely Case
Authentication bypass allowing unauthorized access to the reviewer system, data exfiltration, and potential privilege escalation.
If Mitigated
Limited impact with proper input validation, parameterized queries, and database permission restrictions in place.
🎯 Exploit Status
SQL injection via password parameter requires no authentication and has public proof-of-concept code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side input validation and sanitization for all user inputs, especially the password parameter.
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns in HTTP requests.
🧯 If You Can't Patch
- Implement parameterized queries or prepared statements in the application code
- Restrict database user permissions to minimum required access
🔍 How to Verify
Check if Vulnerable:
Test password parameter with SQL injection payloads like ' OR '1'='1 and observe if authentication bypass occurs.Check Version:
Check application version in admin panel or configuration files.Verify Fix Applied:
Test with same SQL injection payloads after implementing fixes; authentication should fail with invalid credentials.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts with SQL-like patterns in password field
Network Indicators:
- HTTP requests containing SQL keywords in password parameter
- Unusual database query patterns from application server
SIEM Query:
source="web_logs" AND (password CONTAINS "' OR" OR password CONTAINS "UNION" OR password CONTAINS "SELECT")