CVE-2022-25337
📋 TL;DR
This vulnerability in Ibexa DXP allows attackers to perform injection attacks via image filenames. It affects systems running ezsystems/ezpublish-kernel versions 7.5.x before 7.5.26 and 1.3.x before 1.3.12. The high CVSS score indicates potential for remote code execution or other serious impacts.
💻 Affected Systems
- Ibexa DXP
- ezsystems/ezpublish-kernel
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
File upload manipulation allowing unauthorized file access, directory traversal, or limited code execution.
If Mitigated
Attack blocked at web application firewall or input validation layer with no impact.
🎯 Exploit Status
Injection via filenames typically requires minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.5.26 or 1.3.12
Vendor Advisory: https://developers.ibexa.co/security-advisories/ibexa-sa-2022-001-image-filenames-sanitization
Restart Required: Yes
Instructions:
1. Update to ezsystems/ezpublish-kernel version 7.5.26 or 1.3.12. 2. Clear application cache. 3. Restart web server.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to reject image filenames containing special characters or path traversal sequences.
WAF Rule
allDeploy web application firewall rules to block requests with suspicious filename patterns in upload parameters.
🧯 If You Can't Patch
- Disable image upload functionality entirely if not required.
- Implement strict file extension whitelisting and rename uploaded files to random names.
🔍 How to Verify
Check if Vulnerable:
Check composer.json or installed packages for ezsystems/ezpublish-kernel version below 7.5.26 or 1.3.12.Check Version:
composer show ezsystems/ezpublish-kernelVerify Fix Applied:
Confirm ezsystems/ezpublish-kernel version is 7.5.26 or higher, or 1.3.12 or higher.📡 Detection & Monitoring
Log Indicators:
- Unusual file upload attempts with special characters in filenames
- Errors from file validation functions
Network Indicators:
- HTTP POST requests to upload endpoints with crafted filenames
SIEM Query:
source="web_server" AND (uri_path="*upload*" OR uri_path="*image*") AND (http_method="POST") AND (user_agent="*curl*" OR user_agent="*wget*" OR user_agent="*python*" OR user_agent="*scan*" OR user_agent="*exploit*")