CVE-2025-46000
📋 TL;DR
This CVE describes an arbitrary file upload vulnerability in Filemanager v2.5.0 that allows attackers to upload crafted SVG files containing malicious code. When exploited, this can lead to remote code execution on the affected server. Any system running the vulnerable Filemanager component is at risk.
💻 Affected Systems
- Filemanager
📦 What is this software?
Filemanager by Simogeo
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise leading to data theft, ransomware deployment, or use as a foothold for lateral movement within the network.
Likely Case
Webshell deployment allowing persistent access, file system manipulation, and potential privilege escalation.
If Mitigated
File uploads blocked or sanitized, limiting impact to denial of service or unsuccessful exploitation attempts.
🎯 Exploit Status
SVG files can contain embedded scripts that execute when processed, making exploitation straightforward once the upload endpoint is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after commit c75b914
Vendor Advisory: https://github.com/simogeo/Filemanager/commit/c75b914
Restart Required: No
Instructions:
1. Update Filemanager to the latest version from the official GitHub repository. 2. Replace the vulnerable /rsc/filemanager.rsc.class.php file with the patched version. 3. Verify file upload functionality still works as expected.
🔧 Temporary Workarounds
Disable SVG file uploads
allConfigure the file manager to reject SVG file uploads entirely
Modify file upload configuration to add 'svg' to disallowed file types
Implement file type validation
allAdd server-side validation to check file content, not just extensions
Add MIME type checking and file signature validation for uploaded files
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with rules to block malicious file uploads
- Restrict access to the file upload endpoint using network segmentation or authentication
🔍 How to Verify
Check if Vulnerable:
Check if Filemanager version is 2.5.0 and if /rsc/filemanager.rsc.class.php exists with the vulnerable code from commit c75b914Check Version:
Check the version in Filemanager's configuration files or by examining the commit hash in the repositoryVerify Fix Applied:
Verify the file upload functionality properly validates SVG files and rejects malicious content📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /rsc/filemanager.rsc.class.php
- SVG file uploads followed by unusual system commands
Network Indicators:
- POST requests to file upload endpoints with SVG content
- Subsequent outbound connections from the server
SIEM Query:
source="web_server" AND (uri="/rsc/filemanager.rsc.class.php" OR file_extension="svg") AND http_method="POST"