CVE-2021-41931
📋 TL;DR
CVE-2021-41931 is a SQL injection vulnerability in a Recruitment Management System that allows attackers to execute arbitrary SQL commands through the 'id' parameter. This can lead to unauthorized data access, modification, or deletion. Organizations using the vulnerable Recruitment Management System are affected.
💻 Affected Systems
- Recruitment Management System
📦 What is this software?
Recruitment Management System by Recruitment Management System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise allowing data theft, data destruction, or full system takeover through SQL injection leading to remote code execution.
Likely Case
Unauthorized access to sensitive recruitment data including applicant information, job postings, and internal system data.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Simple SQL injection payloads demonstrated in references
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
Implement parameterized queries and input validation in the vulnerable application code
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns
Input Validation
allImplement server-side validation to only accept numeric values for id parameter
🧯 If You Can't Patch
- Isolate the vulnerable system behind network segmentation
- Implement strict access controls and monitor for unusual database queries
🔍 How to Verify
Check if Vulnerable:
Test the vulnerable endpoint with SQL injection payloads like: 19424269' OR '1'='1Check Version:
Check application version through admin interface or source codeVerify Fix Applied:
Test with same payloads and verify they are rejected or sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed login attempts with SQL patterns
Network Indicators:
- HTTP requests containing SQL keywords in parameters
- Unusual database connection patterns
SIEM Query:
source="web_logs" AND ("' OR" OR "' AND" OR "UNION SELECT" OR "SELECT * FROM")