Information disclosure -> 2fa bypass -> POST exploitation
Program: algolia
Bug Type: MFA
Bounty: Unspecified
Date: 2021-07-23
2FA
MFA-bypass
Summary
The researcher found vulnerability in a webapp that let's an attacker bypass 2FA by knowning a sensitive secret - gauth_secret that is leaked on the response when requesting 2FA renew from an account.
The leaked gauth_secret could be used on google authenticator to create codes that can directly be used to pass MFA. Although it doesn't have a direct impact, a account takeover is possible if the gauth_token of a user is leaked somehow.