CVE-2023-41542
📋 TL;DR
This SQL injection vulnerability in jeecg-boot version 3.5.3 allows remote attackers to execute arbitrary SQL commands via the jmreport/qurestSql component. Attackers can escalate privileges, access sensitive data, and potentially take control of affected systems. Organizations using jeecg-boot 3.5.3 are affected.
💻 Affected Systems
- jeecg-boot
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with administrative access, data exfiltration, and potential lateral movement to other systems.
Likely Case
Privilege escalation leading to unauthorized data access and potential data manipulation.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to non-critical data.
🎯 Exploit Status
SQL injection vulnerabilities are commonly exploited and public proof-of-concept details are available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.5.4 or later
Vendor Advisory: https://github.com/jeecgboot/jeecg-boot
Restart Required: Yes
Instructions:
1. Backup your current installation. 2. Update jeecg-boot to version 3.5.4 or later. 3. Restart the application server. 4. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation and parameterized queries for the jmreport/qurestSql endpoint
Implement prepared statements and input sanitization in the affected component
Network Access Control
allRestrict access to the vulnerable endpoint using firewall rules or web application firewall
Configure firewall to block access to /jmreport/qurestSql endpoint from untrusted networks
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with SQL injection protection rules
- Disable or restrict access to the jmreport/qurestSql component if not required
🔍 How to Verify
Check if Vulnerable:
Check if jeecg-boot version is 3.5.3 and test the /jmreport/qurestSql endpoint with SQL injection payloadsCheck Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Verify version is 3.5.4 or later and test that SQL injection attempts are properly blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed login attempts followed by successful access
- Access to sensitive database tables from unexpected sources
Network Indicators:
- SQL syntax in HTTP POST requests to /jmreport/qurestSql
- Unusual database connection patterns
SIEM Query:
source="application.logs" AND ("jmreport/qurestSql" AND ("UNION" OR "SELECT" OR "INSERT" OR "DELETE" OR "DROP"))