Executive Summary

This vulnerability in Windu CMS is due to weak client-side brute-force protection. The system uses a parameter called loginError to track login attempts, but it does not store attempt counts or timeouts on the server side. This allows an attacker to bypass the brute-force protection by resetting the loginError parameter, effectively avoiding detection or lockout.

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Impact Analysis

An attacker can exploit this vulnerability to perform unlimited brute-force login attempts without being blocked or detected by the system's protection mechanisms. This increases the risk of unauthorized access to user accounts or administrative functions, potentially leading to data breaches or system compromise.

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Mitigation Strategies

To mitigate this vulnerability, avoid relying on the client-side brute-force protection mechanism based on the loginError parameter, as it can be bypassed. Implement server-side brute-force protection that tracks attempt counts and enforces timeouts. Additionally, consider applying rate limiting, account lockouts, or CAPTCHA challenges on the server side to prevent automated brute-force attacks.

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