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Description
ThingsBoard v4.3.0.1 is vulnerable to an authentication bypass during the OAuth authorization code exchange. The application improperly trusts user-supplied identity data within the user parameter of the /login/oauth2/code/ endpoint. By manipulating the email address in this JSON object, a remote attacker can bypass authentication and gain full access to any existing user account on the platform without possessing the target user's credentials. This results in a complete account takeover.
References
gist.github.com/KKC73/b9d4efda05693882f1e613c0e0fac78d
gist.github.com/KKC73/b9d4efda05693882f1e613c0e0fac78d