{"id":"UBUNTU-CVE-2023-50761","details":"The signature of a digitally signed S/MIME email message may optionally specify the signature creation date and time. If present, Thunderbird did not compare the signature creation date with the message date and time, and displayed a valid signature despite a date or time mismatch. This could be used to give recipients the impression that a message was sent at a different date or time. This vulnerability affects Thunderbird \u003c 115.6.","modified":"2026-04-22T16:57:13.807162Z","published":"2023-12-20T00:00:00Z","related":["USN-6563-1"],"upstream":["CVE-2023-50761"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-50761"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2023-55/#CVE-2023-50761"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1865647"},{"type":"REPORT","url":"https://www.mozilla.org/security/advisories/mfsa2023-55/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6563-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-50761"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:115.6.0+build2-0ubuntu0.20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:115.6.0+build2-0ubuntu0.20.04.1"}]}],"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","1:78.14.0+build1-0ubuntu0.20.04.2","1:91.5.0+build1-0ubuntu0.20.04.1","1:91.7.0+build2-0ubuntu0.20.04.1","1:91.8.1+build1-0ubuntu0.20.04.1","1:91.9.1+build1-0ubuntu0.20.04.1","1:91.11.0+build2-0ubuntu0.20.04.1","1:102.2.2+build1-0ubuntu0.20.04.1","1:102.4.2+build2-0ubuntu0.20.04.1","1:102.7.1+build2-0ubuntu0.20.04.1","1:102.8.0+build2-0ubuntu0.20.04.1","1:102.9.0+build1-0ubuntu0.20.04.1","1:102.10.0+build2-0ubuntu0.20.04.1","1:102.11.0+build1-0ubuntu0.20.04.1","1:102.13.0+build1-0ubuntu0.20.04.1","1:102.15.0+build1-0ubuntu0.20.04.1","1:102.15.1+build1-0ubuntu0.20.04.1","1:115.3.1+build1-0ubuntu0.20.04.1","1:115.4.1+build1-0ubuntu0.20.04.1","1:115.5.0+build1-0ubuntu0.20.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"thunderbird","binary_version":"1:115.6.0+build2-0ubuntu0.20.04.1"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:115.6.0+build2-0ubuntu0.20.04.1"},{"binary_version":"1:115.6.0+build2-0ubuntu0.20.04.1","binary_name":"thunderbird-mozsymbols"},{"binary_version":"1:115.6.0+build2-0ubuntu0.20.04.1","binary_name":"xul-ext-calendar-timezones"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:115.6.0+build2-0ubuntu0.20.04.1"},{"binary_name":"xul-ext-lightning","binary_version":"1:115.6.0+build2-0ubuntu0.20.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-50761.json"}},{"package":{"name":"thunderbird","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:115.6.0+build2-0ubuntu0.22.04.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:115.6.0+build2-0ubuntu0.22.04.1"}]}],"versions":["1:91.1.2+build1-0ubuntu1","1:91.3.0+build2-0ubuntu1","1:91.3.1+build1-0ubuntu1","1:91.3.2+build1-0ubuntu1","1:91.4.0+build1.1-0ubuntu1","1:91.4.0+build2-0ubuntu1","1:91.5.0+build1-0ubuntu1","1:91.5.1+build1-0ubuntu1","1:91.6.1+build1-0ubuntu1","1:91.7.0+build1-0ubuntu1","1:91.7.0+build2-0ubuntu1","1:91.8.0+build2-0ubuntu1","1:91.9.1+build1-0ubuntu0.22.04.1","1:91.11.0+build2-0ubuntu0.22.04.1","1:102.2.2+build1-0ubuntu0.22.04.1","1:102.4.2+build2-0ubuntu0.22.04.1","1:102.7.1+build2-0ubuntu0.22.04.1","1:102.8.0+build2-0ubuntu0.22.04.1","1:102.9.0+build1-0ubuntu0.22.04.1","1:102.10.0+build2-0ubuntu0.22.04.1","1:102.11.0+build1-0ubuntu0.22.04.1","1:102.13.0+build1-0ubuntu0.22.04.1","1:102.15.0+build1-0ubuntu0.22.04.1","1:102.15.1+build1-0ubuntu0.22.04.1","1:115.3.1+build1-0ubuntu0.22.04.2","1:115.4.1+build1-0ubuntu0.22.04.1","1:115.5.0+build1-0ubuntu0.22.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"thunderbird","binary_version":"1:115.6.0+build2-0ubuntu0.22.04.1"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:115.6.0+build2-0ubuntu0.22.04.1"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:115.6.0+build2-0ubuntu0.22.04.1"},{"binary_name":"xul-ext-calendar-timezones","binary_version":"1:115.6.0+build2-0ubuntu0.22.04.1"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:115.6.0+build2-0ubuntu0.22.04.1"},{"binary_name":"xul-ext-lightning","binary_version":"1:115.6.0+build2-0ubuntu0.22.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-50761.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}