SQL injection vulnerability in viewad.asp in Rapid Classified 3.1 allows remote attackers to execute arbitrary SQL commands via the id parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/30449
http://www.vupen.com/english/advisories/2006/4632
http://www.securityfocus.com/archive/1/452088/100/0/threaded
http://securityreason.com/securityalert/2142