| Description: | Mozilla Thunderbird is a standalone mail and newsgroup client.Several flaws were found in the processing of malformed web content. A webpage containing malicious content could cause Thunderbird to crash or,potentially, execute arbitrary code with the privileges of the user runningThunderbird. (CVE-2014-1587, CVE-2014-1590, CVE-2014-1592, CVE-2014-1593)A flaw was found in the Alarm API, which could allow applications toschedule actions to be run in the future. A malicious web application coulduse this flaw to bypass the same-origin policy. (CVE-2014-1594)Note: All of the above issues cannot be exploited by a specially craftedHTML mail message as JavaScript is disabled by default for mail messages.They could be exploited another way in Thunderbird, for example, whenviewing the full remote content of an RSS feed.This update disables SSL 3.0 support by default in Thunderbird. Details onhow to re-enable SSL 3.0 support are available at:https://access.redhat.com/articles/1284233Red Hat would like to thank the Mozilla project for reporting these issues.Upstream acknowledges Gary Kwong, Randell Jesup, Nils Ohlmeier, JesseRuderman, Max Jonas Werner, Joe Vennix, Berend-Jan Wever, Abhishek Arya,and Boris Zbarsky as the original reporters of these issues.For technical details regarding these flaws, refer to the Mozilla securityadvisories for Thunderbird 31.3.0. You can find a link to the Mozillaadvisories in the References section of this erratum.All Thunderbird users should upgrade to this updated package, whichcontains Thunderbird version 31.3.0, which corrects these issues.After installing the update, Thunderbird must be restarted for the changesto take effect. |