SQL injection vulnerability in check_user.asp in multiple Web Wiz products including (1) Site News 3.06 and earlier, (2) Journal 1.0 and earlier, (3) Polls 3.06 and earlier, and (4) and Database Login 1.71 and earlier allows remote attackers to execute arbitrary SQL commands via the txtUserName parameter.
http://www.vupen.com/english/advisories/2006/0007
http://www.securityfocus.com/archive/1/420551/100/0/threaded