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RHSA-2012:1089: thunderbird security update

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RHSA-2012:1089: thunderbird security update



Mozilla Thunderbird is a standalone mail and newsgroup client.Several flaws were found in the processing of malformed content. Maliciouscontent could cause Thunderbird to crash or, potentially, execute arbitrarycode with the privileges of the user running Thunderbird. (CVE-2012-1948,CVE-2012-1951, CVE-2012-1952, CVE-2012-1953, CVE-2012-1954, CVE-2012-1958,CVE-2012-1962, CVE-2012-1967)Malicious content could bypass same-compartment security wrappers (SCSW)and execute arbitrary code with chrome privileges. (CVE-2012-1959)A flaw in the way Thunderbird called history.forward and history.back couldallow an attacker to conceal a malicious URL, possibly tricking a userinto believing they are viewing trusted content. (CVE-2012-1955)A flaw in a parser utility class used by Thunderbird to parse feeds (suchas RSS) could allow an attacker to execute arbitrary JavaScript with theprivileges of the user running Thunderbird. This issue could have affectedother Thunderbird components or add-ons that assume the class returnssanitized input. (CVE-2012-1957)A flaw in the way Thunderbird handled X-Frame-Options headers could allowmalicious content to perform a clickjacking attack. (CVE-2012-1961)A flaw in the way Content Security Policy (CSP) reports were generated byThunderbird could allow malicious content to steal a victim's OAuth 2.0access tokens and OpenID credentials. (CVE-2012-1963)A flaw in the way Thunderbird handled certificate warnings could allow aman-in-the-middle attacker to create a crafted warning, possibly trickinga user into accepting an arbitrary certificate as trusted. (CVE-2012-1964)The nss update RHBA-2012:0337 for Red Hat Enterprise Linux 5 and 6introduced a mitigation for the CVE-2011-3389 flaw. For compatibilityreasons, it remains disabled by default in the nss packages. This updatemakes Thunderbird enable the mitigation by default. It can be disabled bysetting the NSS_SSL_CBC_RANDOM_IV environment variable to 0 beforelaunching Thunderbird. (BZ#838879)Red Hat would like to thank the Mozilla project for reporting these issues.Upstream acknowledges Benoit Jacob, Jesse Ruderman, Christian Holler, BillMcCloskey, Abhishek Arya, Arthur Gerkis, Bill Keese, moz_bug_r_a4, BobbyHolley, Mariusz Mlynski, Mario Heiderich, Frédéric Buclin, KarthikeyanBhargavan, and Matt McCutchen as the original reporters of these issues.Note: None of the issues in this advisory can be exploited by aspecially-crafted HTML mail message as JavaScript is disabled by defaultfor mail messages. They could be exploited another way in Thunderbird, forexample, when viewing the full remote content of an RSS feed.All Thunderbird users should upgrade to this updated package, whichcontains Thunderbird version 10.0.6 ESR, which corrects these issues. Afterinstalling the update, Thunderbird must be restarted for the changes totake effect.


  • redhat-upgrade-thunderbird
  • redhat-upgrade-thunderbird-debuginfo

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