CVE-2023-26968
📋 TL;DR
CVE-2023-26968 is an unauthenticated file upload vulnerability in Atrocore 1.5.25 that allows attackers to upload arbitrary files without authentication. This affects all Atrocore 1.5.25 installations with the vulnerable Create Import Feed feature enabled, potentially leading to remote code execution.
💻 Affected Systems
- Atrocore
📦 What is this software?
Atrocore by Atrocore
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network.
Likely Case
Webshell deployment allowing persistent access, data exfiltration, and further exploitation of the server.
If Mitigated
File upload attempts blocked at network perimeter or application firewall, limiting impact to failed upload attempts.
🎯 Exploit Status
Public exploit code exists in GitHub repositories, making exploitation trivial for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Disable Create Import Feed Feature
allRemove or disable the vulnerable glyphicon-glyphicon-paperclip function in the Create Import Feed option.
# Edit Atrocore configuration to disable vulnerable feature
# Specific commands depend on Atrocore implementation
Implement File Upload Restrictions
allConfigure web server or application to restrict file uploads to authenticated users only.
# Configure .htaccess or web server rules to restrict access
# Example: Require valid-user for upload endpoints
🧯 If You Can't Patch
- Implement network segmentation to isolate Atrocore instances from critical systems
- Deploy web application firewall (WAF) with file upload protection rules
🔍 How to Verify
Check if Vulnerable:
Attempt unauthenticated file upload to the Create Import Feed endpoint. If successful, system is vulnerable.Check Version:
# Check Atrocore version in application interface or configuration filesVerify Fix Applied:
Verify that unauthenticated file upload attempts are rejected and only authenticated users can upload files.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated POST requests to upload endpoints
- File upload attempts with suspicious extensions (.php, .jsp, .asp)
Network Indicators:
- Unusual file upload traffic patterns
- POST requests to /import-feed or similar endpoints without authentication
SIEM Query:
source="web_logs" AND (uri_path="/import-feed" OR uri_path="*upload*") AND http_method="POST" AND user="-"