Integer overflow in Opera 10.10 through 10.50 allows remote attackers to execute arbitrary code via a large Content-Length value, which triggers a heap overflow.
my.opera.com/securitygroup/blog/2010/03/09/the-malformed-content-length-header-security-issue
osvdb.org/62714
secunia.com/advisories/38820
www.exploit-db.com/exploits/11622
www.opera.com/support/kb/view/948/
www.securityfocus.com/bid/38519
www.securitytracker.com/id?1023690
www.vupen.com/english/advisories/2010/0529
exchange.xforce.ibmcloud.com/vulnerabilities/56673