CVE-2024-12482
📋 TL;DR
This vulnerability allows attackers to perform path traversal attacks via the backup function's name parameter in cjbi wetech-cms. Remote attackers can potentially access or manipulate files outside intended directories. Organizations using affected versions of wetech-cms are at risk.
💻 Affected Systems
- cjbi wetech-cms
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could read sensitive files (configuration, credentials) or overwrite critical system files, potentially leading to data exposure or system compromise.
Likely Case
Unauthorized file access leading to information disclosure of database backups or configuration files.
If Mitigated
Limited impact with proper file permissions and network segmentation restricting access to sensitive directories.
🎯 Exploit Status
Exploit details are publicly available in GitHub repositories. Attack requires access to the backup function but no authentication bypass is mentioned.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor was contacted but did not respond. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation to reject path traversal sequences (../, ..\) in the name parameter
Implement input validation in BackupFileUtil.java to filter out '../' and similar sequences
Disable Backup Functionality
allTemporarily disable the database backup feature if not critically needed
Comment out or remove backup endpoint mappings in web.xml or Spring configuration
🧯 If You Can't Patch
- Implement strict file system permissions to limit what directories the application can access
- Deploy web application firewall (WAF) rules to block path traversal patterns
🔍 How to Verify
Check if Vulnerable:
Check if running wetech-cms version 1.0, 1.1, or 1.2 and if the backup functionality is accessibleCheck Version:
Check application version in web interface or configuration filesVerify Fix Applied:
Test backup functionality with malicious input containing '../' sequences to ensure they are rejected📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in application logs
- Multiple failed backup attempts with suspicious parameters
Network Indicators:
- HTTP requests to backup endpoints containing '../' sequences in parameters
SIEM Query:
web.url:*backup* AND (web.param:*../* OR web.param:*..\*)