Multiple directory traversal vulnerabilities in AZ Bulletin board (AZbb) before 1.0.08 allow (1) remote authenticated users with administrative privileges to delete arbitrary files via a .. (dot dot) in the URL to admin_avatar.php or admin_attachment.php or (2) remote attackers to enumerate files via a .. (dot dot) in the attachment parameter to attachment.php, which displays a different message when a file exists or does not exist.
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