{"id":"UBUNTU-CVE-2014-1558","details":"Mozilla Firefox before 31.0 and Thunderbird before 31.0 allow remote attackers to cause a denial of service (X.509 certificate parsing outage) via a crafted certificate that does not use UTF-8 character encoding in a required context, a different vulnerability than CVE-2014-1559.","modified":"2026-02-04T02:24:25.414990Z","published":"2014-07-22T00:00:00Z","related":["USN-2295-1","USN-2296-1"],"upstream":["CVE-2014-1558"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2014-1558"},{"type":"REPORT","url":"https://www.mozilla.org/security/announce/2014/mfsa2014-65.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2295-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2296-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2014-1558"}],"affected":[{"package":{"name":"firefox","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/firefox@31.0+build1-0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"31.0+build1-0ubuntu0.14.04.1"}]}],"versions":["24.0+build1-0ubuntu1","25.0+build3-0ubuntu0.13.10.1","28.0~b2+build1-0ubuntu2","28.0+build1-0ubuntu1","28.0+build2-0ubuntu1","28.0+build2-0ubuntu2","29.0+build1-0ubuntu0.14.04.2","30.0+build1-0ubuntu0.14.04.3"],"ecosystem_specific":{"binaries":[{"binary_name":"firefox","binary_version":"31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"firefox-dev","binary_version":"31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"firefox-globalmenu","binary_version":"31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"firefox-mozsymbols","binary_version":"31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"firefox-testsuite","binary_version":"31.0+build1-0ubuntu0.14.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-1558.json"}},{"package":{"name":"thunderbird","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:31.0+build1-0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:31.0+build1-0ubuntu0.14.04.1"}]}],"versions":["1:24.0+build1-0ubuntu1","1:24.0+build1-0ubuntu2","1:24.1.1+build1-0ubuntu0.13.10.1","1:24.1.1+build1-0ubuntu1","1:24.2.0+build1-0ubuntu1","1:24.4.0+build1-0ubuntu1","1:24.5.0+build1-0ubuntu0.14.04.1","1:24.6.0+build1-0ubuntu0.14.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"thunderbird","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"thunderbird-dev","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"thunderbird-globalmenu","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"thunderbird-testsuite","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"xul-ext-calendar-timezones","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"},{"binary_name":"xul-ext-lightning","binary_version":"1:31.0+build1-0ubuntu0.14.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-1558.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"low"}]}