{"id":"UBUNTU-CVE-2019-11755","details":"A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the contents of the encrypted message, and might have stripped a different signature from the encrypted message. Previous versions had only suppressed showing a digital signature for messages with an outer multipart/signed layer. This vulnerability affects Thunderbird \u003c 68.1.1.","modified":"2026-04-22T13:29:34.511586Z","published":"2019-09-27T18:15:00Z","related":["USN-4202-1","USN-4335-1"],"upstream":["CVE-2019-11755"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-11755"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-32/#CVE-2019-11755"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1240290"},{"type":"REPORT","url":"https://www.mozilla.org/security/advisories/mfsa2019-32/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4202-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4335-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-11755"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:68.7.0+build1-0ubuntu0.16.04.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:68.7.0+build1-0ubuntu0.16.04.2"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"thunderbird","binary_version":"1:68.7.0+build1-0ubuntu0.16.04.2"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:68.7.0+build1-0ubuntu0.16.04.2"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:68.7.0+build1-0ubuntu0.16.04.2"},{"binary_version":"1:68.7.0+build1-0ubuntu0.16.04.2","binary_name":"xul-ext-calendar-timezones"},{"binary_version":"1:68.7.0+build1-0ubuntu0.16.04.2","binary_name":"xul-ext-gdata-provider"},{"binary_name":"xul-ext-lightning","binary_version":"1:68.7.0+build1-0ubuntu0.16.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-11755.json"}},{"package":{"name":"thunderbird","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:68.2.1+build1-0ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:68.2.1+build1-0ubuntu0.18.04.1"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"thunderbird","binary_version":"1:68.2.1+build1-0ubuntu0.18.04.1"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:68.2.1+build1-0ubuntu0.18.04.1"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:68.2.1+build1-0ubuntu0.18.04.1"},{"binary_version":"1:68.2.1+build1-0ubuntu0.18.04.1","binary_name":"xul-ext-calendar-timezones"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:68.2.1+build1-0ubuntu0.18.04.1"},{"binary_name":"xul-ext-lightning","binary_version":"1:68.2.1+build1-0ubuntu0.18.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-11755.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}