CVE-2025-44040
📋 TL;DR
A privilege escalation vulnerability in OrangeHRM v5.7 allows attackers to bypass authentication via PHP loose-equality comparisons if a specific MD5 hash exists in the credential store. This affects organizations using OrangeHRM v5.7 for human resource management. The vulnerability is disputed by the vendor who argues the required MD5 hash cannot realistically be present without already having full privileges.
💻 Affected Systems
- OrangeHRM
📦 What is this software?
Orangehrm by Orangehrm
⚠️ Risk & Real-World Impact
Worst Case
Full administrative privilege escalation allowing complete system compromise and data exfiltration.
Likely Case
Limited impact due to the disputed nature - exploitation requires improbable preconditions according to vendor.
If Mitigated
No impact if proper access controls and credential validation are implemented.
🎯 Exploit Status
Exploitation requires specific MD5 hash in credential store, which vendor disputes as realistic attack vector.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v5.7.1 or later
Vendor Advisory: https://github.com/orangehrm/orangehrm/releases/tag/v5.7
Restart Required: Yes
Instructions:
1. Backup current installation. 2. Download latest version from official repository. 3. Replace affected files. 4. Restart web server. 5. Verify functionality.
🔧 Temporary Workarounds
Disable affected authentication endpoint
allTemporarily restrict access to UserService.php authentication functions
# Add deny rule to web server configuration
# For Apache: Deny from all in .htaccess
# For Nginx: deny all; in location block
🧯 If You Can't Patch
- Implement strict access controls and monitor authentication logs for unusual patterns
- Review and audit all user accounts for suspicious MD5 hash values in credential store
🔍 How to Verify
Check if Vulnerable:
Check OrangeHRM version in admin panel or by examining source files for v5.7Check Version:
# Check OrangeHRM version via admin interface or examine version.php fileVerify Fix Applied:
Verify version is updated to v5.7.1 or later and check UserService.php for updated hash comparison logic📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful login with unusual patterns
- Authentication logs showing privilege escalation
Network Indicators:
- Unusual authentication requests to UserService.php endpoints
SIEM Query:
source="orangehrm_logs" AND (event="authentication" AND result="success" AND user_role_changed="true")