CVE-2022-47762
📋 TL;DR
CVE-2022-47762 is a path traversal vulnerability in gin-vue-admin's download module that allows attackers to read arbitrary files from the server filesystem. This affects all gin-vue-admin deployments running versions below 2.5.5. Attackers can exploit this to access sensitive configuration files, credentials, or other protected data.
💻 Affected Systems
- gin-vue-admin
📦 What is this software?
Gin Vue Admin by Gin Vue Admin Project
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise through reading sensitive files like SSH keys, database credentials, or configuration files containing secrets, potentially leading to lateral movement and data exfiltration.
Likely Case
Unauthorized access to sensitive files containing application secrets, user data, or system information that could be used for further attacks.
If Mitigated
Limited impact with proper file permissions, network segmentation, and monitoring in place, potentially only exposing non-sensitive files.
🎯 Exploit Status
The vulnerability is simple to exploit with basic HTTP requests using directory traversal sequences like '../' in download parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5.5
Vendor Advisory: https://github.com/flipped-aurora/gin-vue-admin/issues/1309
Restart Required: Yes
Instructions:
1. Update gin-vue-admin to version 2.5.5 or later. 2. Pull the latest code from the repository. 3. Rebuild and redeploy the application. 4. Restart the application server.
🔧 Temporary Workarounds
Input Validation Filter
allImplement input validation to reject download requests containing path traversal sequences
Implement middleware to sanitize download parameters, rejecting any containing '../', '..\\', or similar traversal patterns
Web Application Firewall Rule
allBlock requests with path traversal patterns in download endpoints
Add WAF rule to block requests to download endpoints containing '../', '..\\', '%2e%2e%2f', or encoded traversal sequences
🧯 If You Can't Patch
- Disable the download module entirely if not required for business operations
- Implement strict network access controls to limit access to the vulnerable endpoint
🔍 How to Verify
Check if Vulnerable:
Check if application version is below 2.5.5 by examining package.json or application metadata, or test by attempting to download a file with '../' in the path parameterCheck Version:
Check package.json for version or use application's built-in version endpoint if availableVerify Fix Applied:
Verify version is 2.5.5 or higher and test that path traversal attempts (e.g., requesting '../../etc/passwd') are properly rejected📡 Detection & Monitoring
Log Indicators:
- HTTP requests to download endpoints containing '../', '..\\', or encoded traversal sequences
- Unusual file access patterns from web application user
Network Indicators:
- HTTP requests with suspicious path parameters in download URLs
- Multiple failed attempts with different traversal patterns
SIEM Query:
web.url:*download* AND (web.url:*..%2f* OR web.url:*..%5c* OR web.url:*../* OR web.url:*..\\*)