CVE-2025-29150
📋 TL;DR
BlueCMS 1.6 contains an arbitrary file deletion vulnerability that allows attackers to delete files on the server via a crafted request to /publish.php. This affects all installations of BlueCMS 1.6 that have the vulnerable publish.php functionality enabled.
💻 Affected Systems
- BlueCMS
📦 What is this software?
Bluecms by Bluecms Project
⚠️ Risk & Real-World Impact
Worst Case
Critical system files could be deleted, causing complete system compromise or service disruption, potentially leading to data loss and extended downtime.
Likely Case
Attackers delete web application files, configuration files, or user-uploaded content, causing service disruption and requiring restoration from backups.
If Mitigated
If proper file permissions and input validation are in place, impact is limited to deletion of non-critical files within the web directory.
🎯 Exploit Status
Exploit requires authentication to access publish.php functionality. The vulnerability is in parameter validation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or apply workarounds.
🔧 Temporary Workarounds
Input Validation for id Parameter
allAdd strict validation to ensure id parameter only contains expected values
Edit publish.php to validate id parameter before processing
Restrict File Deletion Permissions
linuxSet proper file permissions to prevent deletion of critical files
chmod 644 critical_files
chown root:root critical_files
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious requests to /publish.php
- Restrict access to publish.php functionality to trusted users only
🔍 How to Verify
Check if Vulnerable:
Check if BlueCMS version is 1.6 and publish.php exists with del functionalityCheck Version:
Check BlueCMS configuration files or admin panel for version informationVerify Fix Applied:
Test that crafted requests with malicious id parameters no longer delete files📡 Detection & Monitoring
Log Indicators:
- Multiple DELETE requests to /publish.php with unusual id parameters
- File deletion errors in application logs
Network Indicators:
- HTTP POST/GET requests to /publish.php?act=del with suspicious parameters
SIEM Query:
source="web_logs" AND uri="/publish.php" AND query="act=del" AND (id CONTAINS "../" OR id CONTAINS "/etc/")