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Improper Authentication


Severity Medium
Score 6.4/10


The make_password function in ipsclass.php in Invision Power Board (IPB) 2.1.4 uses random data generated from partially predictable seeds to create the authentication code that is sent by e-mail to a user with a lost password, which might make it easier for remote attackers to guess the code and change the password for an IPB account, possibly involving millions of requests.

  • LOW
  • NONE
  • NONE

CWE-287 - Improper Authentication

Improper (or broken) authentication attacks are widespread, and have accounted for many of the worst data breaches in recent years. Improper authentication attacks are a class of vulnerabilities where an attacker impersonates a legitimate user by exploiting weaknesses in either session management or credential management to gain access to the user’s account. This can result in disclosure of sensitive information, and can lead to system compromise, theft, identity theft, and fraud.


Advisory Timeline

  • Published