CVE-2019-1010151
📋 TL;DR
CVE-2019-1010151 is a critical file deletion vulnerability in zzcms (zzmcms) that allows attackers to delete arbitrary files and achieve remote code execution (getshell). This affects zzcms versions 8.3 and earlier, potentially compromising websites using this content management system.
💻 Affected Systems
- zzcms
- zzmcms
📦 What is this software?
Zzmcms by Zzcms
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the web server, data theft, defacement, and lateral movement to other systems.
Likely Case
Website defacement, data manipulation, installation of backdoors, and credential theft from the compromised CMS.
If Mitigated
Limited impact with proper file permissions, web application firewalls, and restricted user access preventing successful exploitation.
🎯 Exploit Status
Exploitation requires authentication to the CMS, but the vulnerability is well-documented with public proof-of-concept available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.4 or later
Vendor Advisory: Not publicly documented
Restart Required: No
Instructions:
1. Backup current installation and database. 2. Download latest version from official source. 3. Replace all files except configuration and upload directories. 4. Run any database update scripts if provided.
🔧 Temporary Workarounds
Restrict file permissions
linuxSet strict file permissions on web directories to prevent unauthorized file deletion
chmod 644 /path/to/zzcms/user/ppsave.php
chmod 755 /path/to/zzcms/user/
Web Application Firewall rule
allBlock access to vulnerable endpoint or filter malicious requests
# Example mod_security rule: SecRule REQUEST_URI "@contains /user/ppsave.php" "id:1001,deny,status:403"
🧯 If You Can't Patch
- Disable or remove the /user/ppsave.php file entirely
- Implement strict authentication controls and monitor access to vulnerable endpoints
🔍 How to Verify
Check if Vulnerable:
Check if /user/ppsave.php exists and review version in CMS admin panel or configuration filesCheck Version:
grep -r 'version\|Version' /path/to/zzcms/ | head -5Verify Fix Applied:
Verify version is 8.4+ and test that file deletion functionality is properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /user/ppsave.php
- File deletion operations in web server logs
- Multiple failed authentication attempts followed by ppsave.php access
Network Indicators:
- HTTP POST requests to /user/ppsave.php with file path parameters
- Unusual outbound connections from web server after exploitation
SIEM Query:
source="web_server" AND uri="/user/ppsave.php" AND (method="POST" OR status=200)