CVE-2023-2429
📋 TL;DR
CVE-2023-2429 is an improper access control vulnerability in phpMyFAQ that allows attackers to bypass authentication and gain unauthorized access to administrative functions. This affects all phpMyFAQ installations prior to version 3.1.13. Attackers can exploit this without authentication to compromise FAQ systems.
💻 Affected Systems
- phpMyFAQ
📦 What is this software?
Phpmyfaq by Phpmyfaq
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover where attackers gain administrative privileges, modify/delete all FAQ content, inject malicious code, and potentially pivot to underlying server infrastructure.
Likely Case
Unauthorized access to administrative dashboard leading to FAQ content manipulation, user data exposure, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper network segmentation and monitoring, potentially only affecting the FAQ application without lateral movement.
🎯 Exploit Status
Exploit details are publicly available through the huntr.dev bounty program and GitHub commit references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.13
Vendor Advisory: https://github.com/thorsten/phpmyfaq/commit/07552f5577ff8b1e6f7cdefafcce9b2a744d3a24
Restart Required: No
Instructions:
1. Backup your current phpMyFAQ installation and database. 2. Download phpMyFAQ 3.1.13 or later from the official repository. 3. Replace all files with the new version while preserving your configuration and data files. 4. Verify the installation works correctly.
🔧 Temporary Workarounds
Temporary Access Restriction
allRestrict access to phpMyFAQ admin interface using web server rules or network controls
# Apache: Add to .htaccess or virtual host config
<Location /admin>
Require ip 192.168.1.0/24
</Location>
# Nginx: Add to server block
location /admin {
allow 192.168.1.0/24;
deny all;
}
🧯 If You Can't Patch
- Implement strict network access controls to limit phpMyFAQ access to trusted IP addresses only.
- Deploy a web application firewall (WAF) with rules to detect and block authentication bypass attempts.
🔍 How to Verify
Check if Vulnerable:
Check your phpMyFAQ version by viewing the footer on any page or examining the source code for version strings. Versions below 3.1.13 are vulnerable.Check Version:
grep -r "version.*3\.1\." /path/to/phpmyfaq/ || cat /path/to/phpmyfaq/inc/Version.php | grep '\$version'Verify Fix Applied:
After updating, verify the version shows 3.1.13 or higher in the application footer and test that authentication controls work properly for admin functions.📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to admin URLs without prior authentication
- Multiple failed login attempts followed by successful admin access from same IP
- Admin actions from IP addresses not associated with authorized users
Network Indicators:
- HTTP requests to /admin/* paths without proper authentication headers or cookies
- Unusual spikes in traffic to administrative endpoints
SIEM Query:
source="web_logs" AND (url_path="/admin/*" OR url_path="/administration/*") AND (status_code=200 OR status_code=302) AND NOT (user_agent="authorized_bot" OR src_ip IN ["trusted_ips"])🔗 References
- https://github.com/thorsten/phpmyfaq/commit/07552f5577ff8b1e6f7cdefafcce9b2a744d3a24
- https://huntr.dev/bounties/20d3a0b3-2693-4bf1-b196-10741201a540
- https://github.com/thorsten/phpmyfaq/commit/07552f5577ff8b1e6f7cdefafcce9b2a744d3a24
- https://huntr.dev/bounties/20d3a0b3-2693-4bf1-b196-10741201a540
- https://huntr.com/bounties/20d3a0b3-2693-4bf1-b196-10741201a540
