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.
https://exchange.xforce.ibmcloud.com/vulnerabilities/20183
https://exchange.xforce.ibmcloud.com/vulnerabilities/20180
http://www.gulftech.org/?node=research&article_id=00068-04192005
http://secunia.com/advisories/15013