Cross-site JavaScript injection using event handlers shutdown reported a method of injecting running JavaScript code into a page on another site using a modal alert to suspend an event handler while a new page is being loaded. This vulnerability allows an attacker to steal any confidential information the new page might contain, including any passwords and cookies which might allow the attacker to log on to that site as the victim. shutdown also reported a variant using the two-argument form of eval() that did not require a modal dialog and would be much less obtrusive. moz_bug_r_a4 reported two variants that bypassed our initial fixes, one using "new Script()", the other extending the eval() attack using window.__proto__ Note: Thunderbird shares the JavaScript engine with Firefox and could be vulnerable if JavaScript were to be enabled in mail. This is not the default setting and we strongly discourage users from running JavaScript in mail. Workaround Disable JavaScript until you can upgrade to a fixed version. References Original vulnerability: [1]https://bugzilla.mozilla.org/show_bug.cgi?id=296514 Firefox 1.5 fix: [2]https://bugzilla.mozilla.org/show_bug.cgi?id=296639 Alternate fix for Firefox 1.0.8/Mozilla Suite 1.7.13: [3]https://bugzilla.mozilla.org/show_bug.cgi?id=316589 Variants: [4]https://bugzilla.mozilla.org/show_bug.cgi?id=311024 [5]https://bugzilla.mozilla.org/show_bug.cgi?id=311619 [6]https://bugzilla.mozilla.org/show_bug.cgi?id=316589 This issue also affects FC4
Lifting embargo
This bug was fixed for FC4 in Fedora Update FEDORA-2006-488 <http://www.redhat.com/archives/fedora-package-announce/2006-May/msg00019.html>. This bug was fixed for FC5 in Fedora Update FEDORA-2006-487 <http://www.redhat.com/archives/fedora-package-announce/2006-May/msg00018.html>.