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RHSA-2015:2519: thunderbird security update

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RHSA-2015:2519: thunderbird security update



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-2015-4513, CVE-2015-7189, CVE-2015-7197, CVE-2015-7198,CVE-2015-7199, CVE-2015-7200)A same-origin policy bypass flaw was found in the way Thunderbird handledcertain cross-origin resource sharing (CORS) requests. A web pagecontaining malicious content could cause Thunderbird to disclose sensitiveinformation. (CVE-2015-7193)Note: All of the above issues cannot be exploited by a specially craftedHTML mail message because JavaScript is disabled by default for mailmessages. However, they could be exploited in other ways in Thunderbird(for example, by viewing the full remote content of an RSS feed).Red Hat would like to thank the Mozilla project for reporting this issue.Upstream acknowledges Christian Holler, David Major, Jesse Ruderman, TysonSmith, Boris Zbarsky, Randell Jesup, Olli Pettay, Karl Tomlinson, JeffWalden, Gary Kwong, Looben Yang, Shinto K Anto, Ronald Crane, and EhsanAkhgari as the original reporters of these issues.For technical details regarding these flaws, refer to the Mozilla securityadvisories for Thunderbird 38.4.0. 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 38.4.0, which corrects these issues. Afterinstalling the update, Thunderbird must be restarted for the changes totake effect.


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