CVE-2023-42268
📋 TL;DR
Jeecg Boot versions up to 3.5.3 contain a SQL injection vulnerability in the /jeecg-boot/jmreport/show component. This allows attackers to execute arbitrary SQL commands on the database. Organizations using vulnerable Jeecg Boot installations are affected.
💻 Affected Systems
- Jeecg Boot
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, or full system takeover via SQL injection to RCE chaining.
Likely Case
Unauthorized data access, data exfiltration, and potential privilege escalation through database manipulation.
If Mitigated
Limited impact with proper input validation, parameterized queries, and network segmentation in place.
🎯 Exploit Status
SQL injection vulnerabilities are commonly exploited and weaponized quickly.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.5.4 or later
Vendor Advisory: https://github.com/jeecgboot/jeecg-boot/issues/5311
Restart Required: Yes
Instructions:
1. Upgrade Jeecg Boot to version 3.5.4 or later. 2. Restart the application server. 3. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
WAF Rule Implementation
allImplement web application firewall rules to block SQL injection patterns targeting the vulnerable endpoint.
Endpoint Restriction
allRestrict access to /jeecg-boot/jmreport/show endpoint using network ACLs or application-level controls.
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries for all database interactions.
- Segment the database server from the application server and restrict database user permissions.
🔍 How to Verify
Check if Vulnerable:
Check if your Jeecg Boot version is 3.5.3 or earlier and if the /jeecg-boot/jmreport/show endpoint is accessible.Check Version:
Check application configuration files or use the application's version endpoint if available.Verify Fix Applied:
Verify Jeecg Boot version is 3.5.4 or later and test the vulnerable endpoint with SQL injection payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts via the vulnerable endpoint
- Suspicious parameter values in web server logs
Network Indicators:
- Unusual traffic patterns to /jeecg-boot/jmreport/show
- SQL injection payloads in HTTP requests
SIEM Query:
source="web_server" AND uri="/jeecg-boot/jmreport/show" AND (payload="' OR " OR payload="--" OR payload="UNION")