CVE-2024-34336
📋 TL;DR
This vulnerability allows attackers to determine whether specific user accounts exist in ORDAT FOSS-Online by analyzing differences in server responses from the password reset functionality. Attackers can enumerate valid usernames/emails without authentication. All systems running vulnerable versions of FOSS-Online are affected.
💻 Affected Systems
- ORDAT FOSS-Online
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers build comprehensive user lists for targeted phishing, credential stuffing, or social engineering attacks against specific individuals.
Likely Case
Attackers identify valid accounts for credential stuffing attacks or targeted phishing campaigns against known users.
If Mitigated
Limited to reconnaissance only; no direct access to accounts or data without additional vulnerabilities.
🎯 Exploit Status
Simple HTTP request analysis; can be automated with basic scripting.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.24.01
Vendor Advisory: http://foss-online.com
Restart Required: Yes
Instructions:
1. Backup current installation. 2. Download v2.24.01 from vendor. 3. Follow vendor upgrade documentation. 4. Restart application services.
🔧 Temporary Workarounds
Rate Limit Password Reset
allImplement rate limiting on /forgot-password endpoint to slow enumeration
# Configure web server rate limiting (nginx example)
limit_req_zone $binary_remote_addr zone=forgot:10m rate=5r/m;
location /forgot-password { limit_req zone=forgot burst=10 nodelay; }
Standardize Error Responses
allMake password reset responses identical regardless of account existence
# Modify application code to return same HTTP status and timing
# Always show 'If account exists, reset email sent' message
🧯 If You Can't Patch
- Implement WAF rules to detect rapid password reset attempts
- Monitor logs for unusual patterns of password reset requests
🔍 How to Verify
Check if Vulnerable:
Test password reset with valid and invalid accounts; compare HTTP response codes, timing, or error messages.Check Version:
Check application admin panel or version fileVerify Fix Applied:
After upgrade, test password reset - responses should be identical for all inputs.📡 Detection & Monitoring
Log Indicators:
- Multiple failed password reset attempts from single IP
- Pattern of password resets for non-existent accounts
Network Indicators:
- Unusual volume of POST requests to /forgot-password endpoint
SIEM Query:
source="web_logs" url="/forgot-password" | stats count by src_ip | where count > 10