Red Hat Bugzilla – Bug 863617
CVE-2012-3985 Mozilla: Continued access to initial origin after setting document.domain can lead to XSS attacks (MFSA 2012-76)
Last modified: 2016-03-04 06:15:52 EST
Security researcher Collin Jackson reported a violation of the HTML5 specifications for document.domain behavior. Specified behavior requires pages to only have access to windows in a new document.domain but the observed violation allowed pages to retain access to windows from the page's initial origin in addition to the new document.domain. This could potentially lead to cross-site scripting (XSS) attacks.
In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.
Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Collin Jackson as the original reporter.
Not Vulnerable. This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5 and 6.