A vulnerability in Kaiten version 57.131.12 and earlier allows attackers to bypass the PIN code authentication mechanism. The application requires users to input a 6-digit PIN code sent to their email for authorization after entering their login credentials. However, the request limiting mechanism can be easily bypassed, enabling attackers to perform a brute force attack to guess the correct PIN and gain unauthorized access to the application.
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks.
Common protection mechanisms include:
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]