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Advisories

Question2Answer 1.8.8 Session Fixation via Forgot-Password Flow

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severity
critical
date
Affecting

  • question2answer <= 1.8.8

CWE
  • CWE-613 Insufficient Session Expiration
CVSS
9.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References
Credit
Shahrul Nizam Bin Shahrin
Description
Question2Answer through 1.8.8 contains a session invalidation vulnerability that allows attackers with a previously obtained remember-me cookie to retain authenticated access by exploiting the forgot-password reset flow's failure to clear the sessioncode field in qa-include/app/users-edit.php. While the normal password-change flow in qa-include/pages/account.php explicitly clears the sessioncode to invalidate persistent qa_session cookies, the forgot-password handler qa_finish_reset_user() omits this step, allowing any valid persistent cookie issued before the reset to continue authenticating the account after the password reset completes.

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