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.
CVSS Severity (version 2.0):
Impact Subscore: 4.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification
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Vulnerable software and versions