CVE-2024-32642
📋 TL;DR
Masa CMS versions before 7.2.8, 7.3.13, and 7.4.6 are vulnerable to host header poisoning, which allows attackers to hijack password reset emails and take over user accounts. This affects all Masa CMS installations using vulnerable versions. Attackers can compromise any user account, including administrators.
💻 Affected Systems
- Masa CMS
📦 What is this software?
Masacms by Masacms
Masacms by Masacms
Masacms by Masacms
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via administrator account takeover, leading to data theft, website defacement, or ransomware deployment.
Likely Case
Attacker takes over user accounts to steal sensitive data, send phishing emails from legitimate accounts, or escalate privileges.
If Mitigated
Limited impact if strong network controls prevent external access or if multi-factor authentication is enforced for sensitive accounts.
🎯 Exploit Status
Exploitation requires manipulating HTTP Host headers to redirect password reset emails to attacker-controlled domains.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.2.8, 7.3.13, or 7.4.6
Vendor Advisory: https://github.com/MasaCMS/MasaCMS/security/advisories/GHSA-qjm6-c8hx-ffh8
Restart Required: Yes
Instructions:
1. Backup your Masa CMS installation and database. 2. Download the patched version (7.2.8, 7.3.13, or 7.4.6) from the official repository. 3. Replace the existing files with the patched version. 4. Restart the web server and application services. 5. Verify the fix by checking the version and testing password reset functionality.
🔧 Temporary Workarounds
Configure web server to validate Host headers
allSet strict Host header validation in your web server configuration to reject malicious Host headers.
# For Apache: Set UseCanonicalName On in httpd.conf
# For Nginx: Set server_name with valid domains in nginx.conf
Disable password reset functionality
allTemporarily disable password reset emails if not critical, forcing manual account recovery.
# Modify Masa CMS configuration to disable email-based password reset
🧯 If You Can't Patch
- Implement network-level controls to block external access to the Masa CMS instance.
- Enforce multi-factor authentication for all user accounts, especially administrators.
🔍 How to Verify
Check if Vulnerable:
Check your Masa CMS version against affected versions. If using a version before 7.2.8, 7.3.13, or 7.4.6, you are vulnerable.Check Version:
Check the Masa CMS admin panel or review the version file in the installation directory.Verify Fix Applied:
After patching, verify the version is 7.2.8, 7.3.13, or 7.4.6 and test password reset functionality with manipulated Host headers to ensure it fails.📡 Detection & Monitoring
Log Indicators:
- Unusual Host header values in HTTP logs
- Multiple failed password reset attempts from single IP
- Password reset emails sent to unexpected domains
Network Indicators:
- HTTP requests with manipulated Host headers
- Outbound connections to suspicious domains after password reset requests
SIEM Query:
source="web_logs" AND (Host:*malicious-domain* OR Host:*attacker*)