A vulnerability has been identified in Claroline, which may be exploited by remote attackers to bypass the authentication procedure. This flaw is due to a design error in the SSO (Single Sign-On) functionality where a predictable "ssoCookieValue" cookie value based on the current time is generated via the "claro_init_local.inc.php" script, which could be exploited by attackers to gain unauthorized access to the application.
Credits
Vulnerability reported by karmaguedon
ChangeLog
2006-01-25 : Initial release
2006-04-05 : Updated Solution
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