{"id":"USN-5168-2","summary":"thunderbird vulnerability","details":"Tavis Ormandy discovered that NSS, included with Thunderbird, incorrectly\nhandled verifying DSA/RSA-PSS signatures. A remote attacker could use this\nissue to cause Thunderbird to crash, resulting in a denial of service, or\npossibly execute arbitrary code.\n","modified":"2026-04-22T10:20:03.848604Z","published":"2021-12-01T16:45:31Z","related":["UBUNTU-CVE-2021-43527"],"upstream":["CVE-2021-43527","UBUNTU-CVE-2021-43527"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5168-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-43527"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:78.14.0+build1-0ubuntu0.18.04.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:78.14.0+build1-0ubuntu0.18.04.2"}]}],"versions":["1:52.4.0+build1-0ubuntu2","1:52.6.0+build1-0ubuntu1","1:52.7.0+build1-0ubuntu1","1:52.8.0+build1-0ubuntu0.18.04.1","1:52.9.1+build3-0ubuntu0.18.04.1","1:60.2.1+build1-0ubuntu0.18.04.2","1:60.4.0+build2-0ubuntu0.18.04.1","1:60.5.1+build2-0ubuntu0.18.04.1","1:60.6.1+build2-0ubuntu0.18.04.1","1:60.7.0+build1-0ubuntu0.18.04.1","1:60.7.1+build1-0ubuntu0.18.04.1","1:60.7.2+build2-0ubuntu0.18.04.1","1:60.8.0+build1-0ubuntu0.18.04.1","1:60.9.0+build1-0ubuntu0.18.04.1","1:68.2.1+build1-0ubuntu0.18.04.1","1:68.2.2+build1-0ubuntu0.18.04.1","1:68.4.1+build1-0ubuntu0.18.04.1","1:68.7.0+build1-0ubuntu0.18.04.1","1:68.8.0+build2-0ubuntu0.18.04.2","1:68.10.0+build1-0ubuntu0.18.04.1","1:78.8.1+build1-0ubuntu0.18.04.1","1:78.11.0+build1-0ubuntu0.18.04.2","1:78.13.0+build1-0ubuntu0.18.04.1","1:78.14.0+build1-0ubuntu0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"thunderbird","binary_version":"1:78.14.0+build1-0ubuntu0.18.04.2"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:78.14.0+build1-0ubuntu0.18.04.2"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:78.14.0+build1-0ubuntu0.18.04.2"},{"binary_name":"xul-ext-calendar-timezones","binary_version":"1:78.14.0+build1-0ubuntu0.18.04.2"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:78.14.0+build1-0ubuntu0.18.04.2"},{"binary_name":"xul-ext-lightning","binary_version":"1:78.14.0+build1-0ubuntu0.18.04.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5168-2.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2021-43527"}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"thunderbird","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:78.14.0+build1-0ubuntu0.20.04.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:78.14.0+build1-0ubuntu0.20.04.2"}]}],"versions":["1:68.1.2+build1-0ubuntu1","1:68.1.2+build1-0ubuntu2","1:68.2.1+build1-0ubuntu1","1:68.2.2+build1-0ubuntu1","1:68.3.0+build2-0ubuntu1","1:68.3.1+build1-0ubuntu2","1:68.4.1+build1-0ubuntu1","1:68.4.2+build2-0ubuntu1","1:68.5.0+build1-0ubuntu1","1:68.6.0+build2-0ubuntu1","1:68.7.0+build1-0ubuntu1","1:68.7.0+build1-0ubuntu2","1:68.8.0+build2-0ubuntu0.20.04.2","1:68.10.0+build1-0ubuntu0.20.04.1","1:78.7.1+build1-0ubuntu0.20.04.1","1:78.8.1+build1-0ubuntu0.20.04.1","1:78.11.0+build1-0ubuntu0.20.04.2","1:78.13.0+build1-0ubuntu0.20.04.2","1:78.14.0+build1-0ubuntu0.20.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"thunderbird","binary_version":"1:78.14.0+build1-0ubuntu0.20.04.2"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:78.14.0+build1-0ubuntu0.20.04.2"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:78.14.0+build1-0ubuntu0.20.04.2"},{"binary_name":"xul-ext-calendar-timezones","binary_version":"1:78.14.0+build1-0ubuntu0.20.04.2"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:78.14.0+build1-0ubuntu0.20.04.2"},{"binary_name":"xul-ext-lightning","binary_version":"1:78.14.0+build1-0ubuntu0.20.04.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5168-2.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2021-43527"}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.5"}