CVE-2024-12793
📋 TL;DR
This CVE-2024-12793 is a path traversal vulnerability in PbootCMS that allows attackers to access files outside the intended directory by manipulating the 'tag' parameter. It affects PbootCMS versions up to 5.2.3, potentially exposing sensitive files on web servers. The vulnerability can be exploited remotely without authentication.
💻 Affected Systems
- PbootCMS
📦 What is this software?
Pbootcms by Pbootcms
⚠️ Risk & Real-World Impact
Worst Case
Attackers could read sensitive server files like configuration files, source code, or system files, potentially leading to credential theft, system compromise, or further exploitation.
Likely Case
Unauthorized file disclosure from the web server directory, potentially exposing application configuration, source code, or other sensitive files.
If Mitigated
Limited impact with proper file permissions and web server configuration restricting access to sensitive directories.
🎯 Exploit Status
Exploit details are publicly available in the GitHub gist reference. The vulnerability requires minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.2.4
Vendor Advisory: Not specified in provided references
Restart Required: No
Instructions:
1. Backup your current PbootCMS installation and database
2. Download PbootCMS version 5.2.4 or later from official sources
3. Replace the affected file apps/home/controller/IndexController.php with the patched version
4. Verify the fix by testing the vulnerable functionality
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize the 'tag' parameter before processing
Modify apps/home/controller/IndexController.php to validate and sanitize user input for the 'tag' parameter
Web Server Restrictions
linuxConfigure web server to restrict directory traversal attempts
For Apache: Set 'AllowOverride None' in directory configurations
For Nginx: Add 'location ~ /\. { deny all; }' to block dot files
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block path traversal patterns
- Restrict file system permissions to limit what the web server user can access
🔍 How to Verify
Check if Vulnerable:
Check if your PbootCMS version is 5.2.3 or earlier by examining the version file or admin panelCheck Version:
Check the version in the admin panel or look for version information in the source codeVerify Fix Applied:
Test the vulnerable endpoint with path traversal payloads to confirm they are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual requests to IndexController.php with ../ patterns in parameters
- Multiple failed attempts to access files outside web root
Network Indicators:
- HTTP requests containing '../' or similar traversal patterns in URL parameters
SIEM Query:
web.url:*../* AND (web.url:*tag=* OR web.url:*IndexController*)