Cross-site scripting (XSS) vulnerability in Cisco Guard DDoS Mitigation Appliance before 5.1(6), when anti-spoofing is enabled, allows remote attackers to inject arbitrary web script or HTML via certain character sequences in a URL that are not properly handled when the appliance sends a meta-refresh.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29057
http://www.vupen.com/english/advisories/2006/3720
http://www.securityfocus.com/bid/20122
http://www.cisco.com/warp/public/707/cisco-sa-20060920-guardxss.shtml