CRLF injection vulnerability in webapp/jsp/calendar.jsp in Oracle Portal 10g and earlier, including 9.0.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the enc parameter.
http://www.vupen.com/english/advisories/2006/5124
http://www.securityfocus.com/bid/21686
http://www.securityfocus.com/archive/1/455106/100/0/threaded
http://www.securityfocus.com/archive/1/454965/100/0/threaded
http://www.securityfocus.com/archive/1/454945/100/0/threaded
http://securityreason.com/securityalert/2057
http://secunia.com/advisories/23461