CVE-2022-40924
📋 TL;DR
CVE-2022-40924 is an arbitrary file upload vulnerability in Zoo Management System v1.0 that allows attackers to upload malicious files through the animal picture upload functionality. This affects all users running the vulnerable version of the software, particularly those with internet-facing installations. Successful exploitation can lead to remote code execution.
💻 Affected Systems
- Zoo Management System
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via remote code execution, allowing attackers to execute arbitrary commands, steal data, install malware, or pivot to other systems.
Likely Case
Webshell deployment leading to data theft, defacement, or use as a foothold for further attacks.
If Mitigated
File upload attempts blocked or logged, with no successful exploitation.
🎯 Exploit Status
Exploit requires authentication to access the background management system. Public exploit code is available on Exploit-DB and GitHub.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider workarounds or migrating to alternative software.
🔧 Temporary Workarounds
Implement file upload restrictions
allAdd server-side validation to restrict uploaded files to specific extensions (jpg, png, gif) and implement file type verification.
Web Application Firewall rules
allDeploy WAF rules to block file uploads with dangerous extensions (.php, .exe, .sh, etc.) to the vulnerable endpoint.
🧯 If You Can't Patch
- Isolate the Zoo Management System on a separate network segment with strict access controls.
- Implement network monitoring and IDS/IPS rules to detect file upload attempts to the vulnerable endpoint.
🔍 How to Verify
Check if Vulnerable:
Check if you're running Zoo Management System v1.0. Attempt to upload a file with a malicious extension (e.g., test.php) to the Animals module picture upload endpoint.Check Version:
Check application version in admin panel or configuration files.Verify Fix Applied:
Test file upload functionality with restricted extensions only. Verify malicious file uploads are blocked.📡 Detection & Monitoring
Log Indicators:
- File upload attempts with non-image extensions
- POST requests to save_animal endpoint with unusual file names
- Webshell creation in upload directories
Network Indicators:
- HTTP POST requests to /animals/save_animal with file uploads
- Subsequent connections to uploaded malicious files
SIEM Query:
source="web_logs" AND (uri="/animals/save_animal" OR file_extension IN ("php", "exe", "sh", "jsp"))