{"id":"USN-4421-1","summary":"thunderbird vulnerabilities","details":"Multiple security issues were discovered in Thunderbird. If a user were\ntricked in to opening a specially crafted website in a browsing context,\nan attacker could potentially exploit these to cause a denial of service,\nobtain sensitive information, or execute arbtirary code. (CVE-2020-12405,\nCVE-2020-12406, CVE-2020-12410, CVE-2020-12417, CVE-2020-12418,\nCVE-2020-12419, CVE-2020-12420)\n\nIt was discovered that Thunderbird would continue an unencrypted\nconnection when configured to use STARTTLS for IMAP if the server\nresponded with PREAUTH. A remote attacker could potentially exploit\nthis to perform a person-in-the-middle attack in order to obtain\nsensitive information. (CVE-2020-12398)\n\nIt was discovered that NSS showed timing differences when performing DSA\nsignatures. An attacker could potentially exploit this to obtain private\nkeys using a timing attack. (CVE-2020-12399)\n\nIt was discovered that when performing add-on updates, certificate chains\nnot terminating with built-in roots were silently rejected. This could\nresult in add-ons becoming outdated. (CVE-2020-12421)\n","modified":"2026-04-22T10:15:34.323062Z","published":"2020-07-08T17:07:07Z","related":["UBUNTU-CVE-2020-12398","UBUNTU-CVE-2020-12399","UBUNTU-CVE-2020-12405","UBUNTU-CVE-2020-12406","UBUNTU-CVE-2020-12410","UBUNTU-CVE-2020-12417","UBUNTU-CVE-2020-12418","UBUNTU-CVE-2020-12419","UBUNTU-CVE-2020-12420","UBUNTU-CVE-2020-12421"],"upstream":["CVE-2020-12398","CVE-2020-12399","CVE-2020-12405","CVE-2020-12406","CVE-2020-12410","CVE-2020-12417","CVE-2020-12418","CVE-2020-12419","CVE-2020-12420","CVE-2020-12421","UBUNTU-CVE-2020-12398","UBUNTU-CVE-2020-12399","UBUNTU-CVE-2020-12405","UBUNTU-CVE-2020-12406","UBUNTU-CVE-2020-12410","UBUNTU-CVE-2020-12417","UBUNTU-CVE-2020-12418","UBUNTU-CVE-2020-12419","UBUNTU-CVE-2020-12420","UBUNTU-CVE-2020-12421"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4421-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12398"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12399"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12405"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12406"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12410"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12417"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12418"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12419"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12420"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12421"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:68.10.0+build1-0ubuntu0.16.04.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:68.10.0+build1-0ubuntu0.16.04.1"}]}],"versions":["1:38.3.0+build1-0ubuntu2","1:38.5.1+build2-0ubuntu1","1:38.6.0+build1-0ubuntu1","1:38.7.2+build1-0ubuntu0.16.04.1","1:38.8.0+build1-0ubuntu0.16.04.1","1:45.2.0+build1-0ubuntu0.16.04.1","1:45.3.0+build1-0ubuntu0.16.04.2","1:45.4.0+build1-0ubuntu0.16.04.1","1:45.5.1+build1-0ubuntu0.16.04.1","1:45.7.0+build1-0ubuntu0.16.04.1","1:45.8.0+build1-0ubuntu0.16.04.1","1:52.1.1+build1-0ubuntu0.16.04.1","1:52.2.1+build1-0ubuntu0.16.04.1","1:52.3.0+build1-0ubuntu0.16.04.1","1:52.4.0+build1-0ubuntu0.16.04.2","1:52.5.0+build1-0ubuntu0.16.04.1","1:52.6.0+build1-0ubuntu0.16.04.1","1:52.7.0+build1-0ubuntu0.16.04.1","1:52.8.0+build1-0ubuntu0.16.04.1","1:52.9.1+build3-0ubuntu0.16.04.1","1:60.2.1+build1-0ubuntu0.16.04.4","1:60.4.0+build2-0ubuntu0.16.04.1","1:60.5.1+build2-0ubuntu0.16.04.1","1:60.6.1+build2-0ubuntu0.16.04.1","1:60.7.0+build1-0ubuntu0.16.04.1","1:60.7.1+build1-0ubuntu0.16.04.1","1:60.7.2+build2-0ubuntu0.16.04.1","1:60.8.0+build1-0ubuntu0.16.04.2","1:60.9.0+build1-0ubuntu0.16.04.2","1:60.9.1+build1-0ubuntu0.16.04.1","1:68.7.0+build1-0ubuntu0.16.04.2","1:68.8.0+build2-0ubuntu0.16.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"thunderbird","binary_version":"1:68.10.0+build1-0ubuntu0.16.04.1"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:68.10.0+build1-0ubuntu0.16.04.1"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:68.10.0+build1-0ubuntu0.16.04.1"},{"binary_name":"xul-ext-calendar-timezones","binary_version":"1:68.10.0+build1-0ubuntu0.16.04.1"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:68.10.0+build1-0ubuntu0.16.04.1"},{"binary_name":"xul-ext-lightning","binary_version":"1:68.10.0+build1-0ubuntu0.16.04.1"}],"availability":"No 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