CVE-2023-51332

Vulnerability

The 'Forgot Password' feature in PHPJabbers Meeting Room Booking System v1.0 lacks rate limiting. An attacker can target a legitimate user by repeatedly submitting the forgot password form, causing the system to generate a large number of password reset emails. The vulnerability is present in the version as described and confirmed through reference [1].

Exploitation

An attacker needs only to know a legitimate user's email address and have network access to the application's forgot password endpoint. By automating form submissions, the attacker can trigger an excessive volume of password reset emails to the victim. No authentication or special privileges are required; the attacker can execute this remotely and anonymously [1].

Impact

Successful exploitation results in a denial of service (DoS) condition for the targeted user. The victim's email inbox is flooded with password reset messages, which may render their email temporarily unusable, cause important emails to be missed, and potentially lead to the user's email provider rate-limiting or blocking incoming messages. The core application itself may also experience resource strain from generating these emails [1].

Mitigation

As of the available references, no official patch or fixed version has been announced. Users of PHPJabbers Meeting Room Booking System v1.0 are advised to implement rate limiting on the 'Forgot Password' endpoint, such as limiting the number of requests per IP or per email address within a time window, until a vendor update is provided [1].