Lyris ListManager 5.0 through 8.9a allows remote attackers to add "ORDER BY" columns to SQL queries via unusual whitespace characters in the orderby parameter, such as (1) newlines and (2) 0xFF (ASCII 255) characters, which are interpreted as whitespace.
http://www.vupen.com/english/advisories/2005/2820
http://www.securityfocus.com/bid/15787
http://www.securityfocus.com/archive/1/419077/100/0/threaded
http://secunia.com/advisories/17943
http://metasploit.com/research/vulns/lyris_listmanager/
http://archives.neohapsis.com/archives/fulldisclosure/2005-12/0349.html