CVE-2024-46076
📋 TL;DR
RuoYi v4.7.9 and earlier contains a code injection vulnerability in the code generation feature that allows attackers to escape from comments and execute arbitrary code. This affects all systems running vulnerable versions of RuoYi, potentially leading to complete system compromise.
💻 Affected Systems
- RuoYi
📦 What is this software?
Ruoyi by Ruoyi
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system takeover, data exfiltration, and lateral movement within the network.
Likely Case
Unauthenticated attackers executing arbitrary commands on the server, potentially gaining shell access and compromising sensitive data.
If Mitigated
Limited impact if proper input validation and output encoding are implemented, though the vulnerability remains present.
🎯 Exploit Status
Public proof-of-concept demonstrates the vulnerability, making exploitation straightforward for attackers with basic knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v4.8.0 or later
Vendor Advisory: https://github.com/yangzongzhuan/RuoYi
Restart Required: Yes
Instructions:
1. Backup your current RuoYi installation and database. 2. Download the latest version from the official GitHub repository. 3. Replace the vulnerable files with patched versions. 4. Restart the application server. 5. Verify the fix by testing the code generation feature.
🔧 Temporary Workarounds
Disable Code Generation Feature
allTemporarily disable the vulnerable code generation functionality until patching can be completed.
Modify application configuration to remove or disable the code generation module
Implement Input Validation
allAdd strict input validation and output encoding for all user inputs in the code generation feature.
Implement proper sanitization in the affected Java controllers and templates
🧯 If You Can't Patch
- Implement network segmentation to isolate RuoYi instances from critical systems
- Deploy a web application firewall (WAF) with rules to detect and block code injection attempts
🔍 How to Verify
Check if Vulnerable:
Check if your RuoYi version is 4.7.9 or earlier by examining the application version in the admin interface or configuration files.Check Version:
Check the application.properties or similar configuration files for version information, or inspect the admin dashboard.Verify Fix Applied:
After updating, verify the version shows 4.8.0 or later and test the code generation feature with malicious input to ensure proper sanitization.📡 Detection & Monitoring
Log Indicators:
- Unusual code generation requests
- Suspicious patterns in user input fields
- Unexpected system command execution in logs
Network Indicators:
- HTTP requests containing malicious code patterns to code generation endpoints
- Unusual outbound connections from the RuoYi server
SIEM Query:
source="ruoyi-logs" AND (message="*codegen*" OR message="*generate*" OR message="*inject*") AND (message="*malicious*" OR message="*suspicious*")