CVE-2011-3140 Information

Description

IBM Web Application Firewall as used on the G400 IPS-G400-IB-1 and GX4004 IPS-GX4004-IB-2 appliances with update 31.030 does not properly handle query strings with multiple instances of the same parameter which allows remote attackers to bypass intended intrusion prevention by dividing a dangerous parameter value into substrings as demonstrated by a SQL statement that is split across multiple iid parameters and then sent to a .aspx file on an IIS web server.

Reference

http://securityreason.com/securityalert/8339 http://securitytracker.com/id?1025683 http://www.iss.net/security_center/reference/vuln/HTTP_Parameter_Abuse.htm http://www.securityfocus.com/archive/1/518556/100/0/threaded http://www.securityfocus.com/bid/48370 https://exchange.xforce.ibmcloud.com/vulnerabilities/67178 https://www.trustwave.com/spiderlabs/advisories/TWSL2011-006.txt