Opera before 8.51 on Linux and Unix systems allows remote attackers to execute arbitrary code via shell metacharacters (backticks) in a URL that another product provides in a command line argument when launching Opera.Referenceshttp://www.opera.com/docs/changelogs/linux/851/http://www.novell.com/linux/security/advisories/2005_28_sr.htmlhttp://secunia.com/advisories/18111http://securityreason.com/securityalert/199http://www.vupen.com/english/advisories/2005/2519http://www.osvdb.org/21003http://securitytracker.com/id?1015253http://www.securityfocus.com/bid/15521http://www.securityfocus.com/archive/1/417393/30/0/threadedhttp://secunia.com/secunia_research/2005-57/advisory/http://secunia.com/advisories/16907http://www.gentoo.org/security/en/glsa/glsa-200512-10.xmlhttp://archives.neohapsis.com/archives/fulldisclosure/2005-11/0677.html
