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hacktricks/pentesting-web/reset-password.md
Carlos Polop a268747dc2 A
2024-02-09 08:14:36 +01:00

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Reset/Forgotten Password Bypass

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Password Reset Token Leak Via Referrer

Password Reset Poisoning

  • Attackers may manipulate the Host header during password reset requests to point the reset link to a malicious site.
  • Patch: Use $_SERVER['SERVER_NAME'] to construct password reset URLs instead of $_SERVER['HTTP_HOST'].
  • Impact: Leads to potential account takeover by leaking reset tokens to attackers.
  • Mitigation Steps:
    • Validate the Host header against a whitelist of allowed domains.
    • Use secure, server-side methods to generate absolute URLs.
  • References:

Password Reset By Manipulating Email Parameter

  • Attackers can manipulate the password reset request by adding additional email parameters to divert the reset link.
  • Mitigation Steps:
    • Properly parse and validate email parameters server-side.
    • Use prepared statements or parameterized queries to prevent injection attacks.
  • References:

Changing Email And Password of any User through API Parameters

  • Attackers can modify email and password parameters in API requests to change account credentials.
  • Mitigation Steps:
    • Ensure strict parameter validation and authentication checks.
    • Implement robust logging and monitoring to detect and respond to suspicious activities.
  • Reference:

No Rate Limiting: Email Bombing

  • Lack of rate limiting on password reset requests can lead to email bombing, overwhelming the user with reset emails.
  • Mitigation Steps:
    • Implement rate limiting based on IP address or user account.
    • Use CAPTCHA challenges to prevent automated abuse.
  • References:

Find out How Password Reset Token is Generated

  • Understanding the pattern or method behind token generation can lead to predicting or brute-forcing tokens.
  • Mitigation Steps:
    • Use strong, cryptographic methods for token generation.
    • Ensure sufficient randomness and length to prevent predictability.
  • Tools: Use Burp Sequencer to analyze the randomness of tokens.

Guessable GUID

  • If GUIDs (e.g., version 1) are guessable or predictable, attackers may brute-force them to generate valid reset tokens.
  • Mitigation Steps:
    • Use GUID version 4 for randomness or implement additional security measures for other versions.
  • Tools: Use guidtool for analyzing and generating GUIDs.

Response Manipulation: Replace Bad Response With Good One

  • Manipulating HTTP responses to bypass error messages or restrictions.
  • Mitigation Steps:
    • Implement server-side checks to ensure response integrity.
    • Use secure communication channels like HTTPS to prevent man-in-the-middle attacks.
  • Reference:

Using Expired Token

  • Testing whether expired tokens can still be used for password reset.
  • Mitigation Steps:
    • Implement strict token expiration policies and validate token expiry server-side.

Brute Force Password Reset Token

  • Attempting to brute-force the reset token using tools like Burpsuite and IP-Rotator to bypass IP-based rate limits.
  • Mitigation Steps:
    • Implement robust rate-limiting and account lockout mechanisms.
    • Monitor for suspicious activities indicative of brute-force attacks.

Try Using Your Token

  • Testing if an attacker's reset token can be used in conjunction with the victim's email.
  • Mitigation Steps:
    • Ensure that tokens are bound to the user session or other user-specific attributes.

Session Invalidation in Logout/Password Reset

  • Ensuring that sessions are invalidated when a user logs out or resets their password.
  • Mitigation Steps:
    • Implement proper session management, ensuring that all sessions are invalidated upon logout or password reset.

Session Invalidation in Logout/Password Reset

  • Reset tokens should have an expiration time after which they become invalid.
  • Mitigation Steps:
    • Set a reasonable expiration time for reset tokens and strictly enforce it server-side.

References

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Hacking Insights
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Real-Time Hack News
Keep up-to-date with fast-paced hacking world through real-time news and insights

Latest Announcements
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Join us on Discord and start collaborating with top hackers today!

Learn AWS hacking from zero to hero with htARTE (HackTricks AWS Red Team Expert)!

Other ways to support HackTricks: