The spell checking component of (1) Asbru Web Content Management before 6.1.22, (2) Asbru Web Content Editor before 6.0.22, and (3) Asbru Website Manager before 6.0.22 allows remote attackers to execute arbitrary commands via an unspecified parameter that is not sanitized before Aspell is invoked.
http://www.vupen.com/english/advisories/2006/4061
http://www.vupen.com/english/advisories/2006/4060
http://www.vupen.com/english/advisories/2006/4004
http://www.securityfocus.com/bid/20544
http://wcm.asbrusoft.com/page.php/id=791
http://secunia.com/advisories/22472
http://secunia.com/advisories/22353
http://secunia.com/advisories/22344
http://editor.asbrusoft.com/page.php/id=727
http://archives.neohapsis.com/archives/fulldisclosure/2006-10/0306.html