CVE-2021-25839
📋 TL;DR
MintHCM RELEASE 3.0.8 has weak password requirements in its user creation function, allowing attackers to more easily brute-force passwords. This affects all organizations using this specific version of MintHCM. The vulnerability enables unauthorized access to user accounts.
💻 Affected Systems
- MintHCM
📦 What is this software?
Minthcm by Minthcm
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through administrative account takeover, leading to data theft, ransomware deployment, or business disruption.
Likely Case
Unauthorized access to user accounts, privilege escalation, and potential data exfiltration from compromised accounts.
If Mitigated
Limited impact with strong network segmentation, multi-factor authentication, and proper monitoring in place.
🎯 Exploit Status
Exploitation requires access to user creation functionality, but weak passwords make brute-forcing trivial.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 3.0.8
Vendor Advisory: https://minthcm.org/
Restart Required: No
Instructions:
1. Upgrade MintHCM to version 3.0.9 or later. 2. Verify password policies enforce strong requirements. 3. Test user creation functionality.
🔧 Temporary Workarounds
Enforce Strong Password Policy
allImplement custom password complexity requirements through configuration or custom code.
Modify MintHCM configuration files to enforce minimum password length, complexity, and history requirements.
Disable User Self-Registration
allTemporarily disable user self-registration until patched.
Configure MintHCM to require administrator approval for all new user accounts.
🧯 If You Can't Patch
- Implement network segmentation to isolate MintHCM from critical systems.
- Enable multi-factor authentication for all user accounts.
🔍 How to Verify
Check if Vulnerable:
Check MintHCM version in admin panel or configuration files. If version is 3.0.8, test if weak passwords (like 'password123') are accepted during user creation.Check Version:
Check MintHCM admin dashboard or config.php file for version information.Verify Fix Applied:
After upgrade, attempt to create user with weak password to verify it's rejected. Check version is 3.0.9 or later.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts from single IP
- Successful logins after many failures
- Unusual user creation activity
Network Indicators:
- Brute-force attack patterns against authentication endpoints
- Unusual traffic to user creation APIs
SIEM Query:
source="minthcm" AND (event="failed_login" count>10 within 5min OR event="user_created" by unusual_user)