Opera before 9.52, when rendering an http page that has loaded an https page into a frame, displays a padlock icon and offers a security information dialog reporting a secure connection, which might allow remote attackers to trick a user into performing unsafe actions on the http page.
bugs.gentoo.org/show_bug.cgi?id=235298
secunia.com/advisories/31549
secunia.com/advisories/32538
security.gentoo.org/glsa/glsa-200811-01.xml
www.openwall.com/lists/oss-security/2008/09/19/2
www.openwall.com/lists/oss-security/2008/09/24/4
www.opera.com/docs/changelogs/freebsd/952/
www.opera.com/docs/changelogs/linux/952/
www.opera.com/docs/changelogs/mac/952/
www.opera.com/docs/changelogs/solaris/952/
www.opera.com/docs/changelogs/windows/952/
www.opera.com/support/search/view/895/
www.securityfocus.com/bid/30768
www.securitytracker.com/id?1020721
www.vupen.com/english/advisories/2008/2416
exchange.xforce.ibmcloud.com/vulnerabilities/44555