CVE-2005-3416
HighSummary
phpBB 2.0.17 and earlier, when register_globals is enabled and the session_start function has not been called to handle a session, allows remote attackers to bypass security checks by setting the $_SESSION and $HTTP_SESSION_VARS variables to strings instead of arrays, which causes an array_merge function call to fail.
Risk Assessment
An attacker can bypass authentication and authorization mechanisms, potentially gaining unauthorized access to administrative functions or user data.
Recommendation
It is recommended to immediately upgrade phpBB to version 2.0.18 or later and disable the register_globals option in the PHP configuration.
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Original NVD description (English source)
phpBB 2.0.17 and earlier, when register_globals is enabled and the session_start function has not been called to handle a session, allows remote attackers to bypass security checks by setting the $_SESSION and $HTTP_SESSION_VARS variables to strings instead of arrays, which causes an array_merge function call to fail.