{"id":"UBUNTU-CVE-2020-15669","details":"When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR \u003c 68.12 and Thunderbird \u003c 68.12.","modified":"2026-04-22T12:20:11.796086Z","published":"2020-10-01T19:15:00Z","upstream":["CVE-2020-15669"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-15669"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2020-37/#CVE-2020-15669"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2020-40/#CVE-2020-15669"},{"type":"REPORT","url":"https://rhn.redhat.com/errata/RHSA-2020-3558.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-15669"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/thunderbird@1:78.8.1+build1-0ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:78.8.1+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","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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"thunderbird","binary_version":"1:78.8.1+build1-0ubuntu0.18.04.1"},{"binary_name":"thunderbird-gnome-support","binary_version":"1:78.8.1+build1-0ubuntu0.18.04.1"},{"binary_name":"thunderbird-mozsymbols","binary_version":"1:78.8.1+build1-0ubuntu0.18.04.1"},{"binary_name":"xul-ext-calendar-timezones","binary_version":"1:78.8.1+build1-0ubuntu0.18.04.1"},{"binary_name":"xul-ext-gdata-provider","binary_version":"1:78.8.1+build1-0ubuntu0.18.04.1"},{"binary_name":"xul-ext-lightning","binary_version":"1:78.8.1+build1-0ubuntu0.18.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15669.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:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}