WebKitGTK+ is vulnerable to access restriction bypass. The attack exists because of a flaw found in the way WebKit handled DNS prefetching. Even when it was disabled, web content containing certain “link” elements could cause WebKitGTK+ to perform DNS prefetching.
lists.apple.com/archives/security-announce/2010//Nov/msg00002.html
lists.apple.com/archives/security-announce/2010//Nov/msg00003.html
lists.fedoraproject.org/pipermail/package-announce/2011-January/052906.html
lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
secunia.com/advisories/42314
secunia.com/advisories/43068
secunia.com/advisories/43086
support.apple.com/kb/HT4455
support.apple.com/kb/HT4456
trac.webkit.org/changeset/63622
www.mandriva.com/security/advisories?name=MDVSA-2011:039
www.redhat.com/support/errata/RHSA-2011-0177.html
www.vupen.com/english/advisories/2010/3046
www.vupen.com/english/advisories/2011/0212
www.vupen.com/english/advisories/2011/0216
www.vupen.com/english/advisories/2011/0552
access.redhat.com/errata/RHSA-2011:0177
access.redhat.com/security/updates/classification/#moderate
bugs.webkit.org/show_bug.cgi?id=42500
bugzilla.redhat.com/show_bug.cgi?id=667024
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12293