CVE-2025-4329
📋 TL;DR
This vulnerability in 74CMS allows attackers to perform path traversal attacks by manipulating the 'url' parameter in the download function. Attackers can potentially read arbitrary files on the server by exploiting improper input validation. All users running 74CMS versions up to 3.33.0 are affected.
💻 Affected Systems
- 74CMS
📦 What is this software?
74cms by 74cms
⚠️ Risk & Real-World Impact
Worst Case
Attackers could read sensitive system files like /etc/passwd, configuration files, or source code, potentially leading to credential theft, privilege escalation, or further system compromise.
Likely Case
Attackers read application configuration files, source code, or other sensitive files stored within the web directory, potentially exposing database credentials or other secrets.
If Mitigated
With proper file permissions and web server configuration, impact is limited to files readable by the web server user within the application directory.
🎯 Exploit Status
Public exploit code is available. The vulnerability requires no authentication and has simple exploitation steps.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
1. Check for official patch from 74CMS developers
2. If patch available, apply according to vendor instructions
3. Verify fix by testing the vulnerable endpoint
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to filter path traversal sequences from the url parameter
Modify /index.php/index/download/index to validate and sanitize the url parameter before processing
Web Server Restriction
allConfigure web server to restrict file access to specific directories
For Apache: Use mod_rewrite to restrict file access patterns
For Nginx: Use location blocks with deny directives
🧯 If You Can't Patch
- Implement WAF rules to block path traversal patterns in URL parameters
- Restrict file system permissions to limit what the web server user can read
🔍 How to Verify
Check if Vulnerable:
Test by accessing /index.php/index/download/index?url=../../../etc/passwd and checking if file contents are returnedCheck Version:
Check 74CMS version in admin panel or configuration filesVerify Fix Applied:
Attempt the same test after applying fixes - should receive error or no file contents📡 Detection & Monitoring
Log Indicators:
- Multiple requests to /index.php/index/download/index with ../ patterns in parameters
- Unusual file access patterns from web server process
Network Indicators:
- HTTP requests containing path traversal sequences (../, ..\) in URL parameters
SIEM Query:
web.url:*../* AND web.path:"/index.php/index/download/index"