Wolves Security Team has discovered a vulnerability in DeDeCMS, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to an error within the authentication mechanism in include/userlogin.class.php, which can be exploited to bypass the authentication mechanism by setting the "_SESSION[dede_admin_id]" parameter to "1".
Successful exploitation requires that "session.auto_start" is enabled.
The vulnerability is confirmed in version 5.5 GBK. Other versions may also be affected.
Solution: Update to version 5.6 GBK.
Provided and/or discovered by: Wolves Security Team
Original Advisory: http://bbs.wolvez.org/topic/125/
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Subject: DeDeCMS Authentication Security Bypass
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