CVE-2025-7906
📋 TL;DR
This critical vulnerability in RuoYi allows attackers to upload arbitrary files without restrictions via the uploadFile function. Remote attackers can exploit this to upload malicious files like web shells, potentially gaining full control of affected systems. All users of RuoYi up to version 4.8.1 are affected.
💻 Affected Systems
- yangzongzhuan RuoYi
📦 What is this software?
Ruoyi by Ruoyi
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network.
Likely Case
Attackers upload web shells to gain persistent access, execute arbitrary commands, and potentially pivot to other systems.
If Mitigated
With proper file upload validation and web application firewalls, exploitation attempts are blocked and logged.
🎯 Exploit Status
Exploit details are publicly disclosed on GitHub, making this easily exploitable by attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.8.2 or later
Vendor Advisory: https://github.com/yangzongzhuan/RuoYi/issues/296
Restart Required: Yes
Instructions:
1. Update RuoYi to version 4.8.2 or later. 2. Replace the vulnerable CommonController.java file. 3. Restart the RuoYi application server.
🔧 Temporary Workarounds
File Upload Restriction
allImplement server-side file type validation and restrict uploads to specific directories with proper permissions.
WAF Rule Implementation
allDeploy web application firewall rules to block file uploads with dangerous extensions or suspicious patterns.
🧯 If You Can't Patch
- Isolate the RuoYi instance from the internet and restrict network access to only necessary systems.
- Implement strict file upload validation in application code and monitor upload directories for suspicious files.
🔍 How to Verify
Check if Vulnerable:
Check RuoYi version in application properties or by examining the CommonController.java file for missing file upload validation.Check Version:
Check ruoyi-admin/pom.xml for version tag or application.properties for ruoyi.versionVerify Fix Applied:
Verify RuoYi version is 4.8.2+ and test file upload functionality with malicious files to ensure they are rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /common/upload endpoint
- Files with suspicious extensions (.jsp, .php, .war) in upload directories
- Multiple failed upload attempts
Network Indicators:
- POST requests to /common/upload with unusual file types
- Subsequent connections to uploaded files from external IPs
SIEM Query:
source="ruoyi-logs" AND (uri="/common/upload" OR file_extension IN ("jsp", "php", "war"))