The view-source: URI implementation in Mozilla Firefox before 3.0.9, Thunderbird, and SeaMonkey does not properly implement the Same Origin Policy, which allows remote attackers to (1) bypass crossdomain.xml restrictions and connect to arbitrary web sites via a Flash file; (2) read, create, or modify Local Shared Objects via a Flash file; or (3) bypass unspecified restrictions and render content via vectors involving a jar: URI.
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00504.html
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00444.html
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00683.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7008
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6266
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6154
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5933
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10972
https://bugzilla.mozilla.org/show_bug.cgi?id=481342
http://www.vupen.com/english/advisories/2009/1125
http://www.ubuntu.com/usn/usn-782-1
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.454275
http://www.securitytracker.com/id?1022093
http://www.securityfocus.com/bid/34656
http://www.redhat.com/support/errata/RHSA-2009-1126.html
http://www.redhat.com/support/errata/RHSA-2009-1125.html
http://www.redhat.com/support/errata/RHSA-2009-0436.html
http://www.mozilla.org/security/announce/2009/mfsa2009-17.html
http://www.mandriva.com/security/advisories?name=MDVSA-2009:141
http://www.mandriva.com/security/advisories?name=MDVSA-2009:111
http://www.debian.org/security/2009/dsa-1830
http://www.debian.org/security/2009/dsa-1797
http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.425408
http://secunia.com/advisories/35882
http://secunia.com/advisories/35602
http://secunia.com/advisories/35561
http://secunia.com/advisories/35536
http://secunia.com/advisories/35065
http://secunia.com/advisories/35042
http://secunia.com/advisories/34894
http://secunia.com/advisories/34844
http://secunia.com/advisories/34843
http://secunia.com/advisories/34780
http://secunia.com/advisories/34758
http://rhn.redhat.com/errata/RHSA-2009-0437.html
http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html