How CVE-2025-29773 Works
Froxlor versions before 2.2.6 fail to enforce email uniqueness during account creation. Authenticated users (resellers/customers) can register accounts using an email already associated with another account (e.g., admin). The system’s lack of validation allows duplicate email entries, leading to identity confusion, potential privilege escalation, and security misconfigurations. Attackers could exploit this to manipulate password recovery, hijack sessions, or bypass audit trails. The vulnerability stems from missing database constraints and application-layer checks during user registration.
DailyCVE Form:
Platform: Froxlor
Version: <2.2.6
Vulnerability: Email duplication
Severity: Medium
Date: 04/04/2025
What Undercode Say:
Exploitation:
1. Duplicate Registration:
curl -X POST 'http://target/froxlor/register.php' -d '[email protected]&username=attacker&password=123456'
2. Session Hijacking: Abuse password reset functionality tied to the duplicated email.
Protection:
1. Patch Upgrade:
apt update && apt install froxlor=2.2.6
2. Database Fix: Add unique constraint to email column:
ALTER TABLE froxlor.users ADD CONSTRAINT unique_email UNIQUE (email);
3. PHP Validation: Add pre-registration check:
if ($db->query("SELECT email FROM users WHERE email='$email'")->num_rows > 0) {
die("Email already registered.");
}
Detection:
1. Log Analysis:
grep "duplicate email" /var/log/froxlor/access.log
2. Database Audit:
SELECT email, COUNT() FROM froxlor.users GROUP BY email HAVING COUNT() > 1;
Mitigation Workaround:
1. .htaccess Restriction:
RewriteCond %{REQUEST_URI} ^/froxlor/register.php [bash]
RewriteRule . - [bash]
2. WAF Rule: Block repeated email submissions.
References:
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-29773
Extra Source Hub:
Undercode
