{"id":"UBUNTU-CVE-2020-24661","details":"GNOME Geary before 3.36.3 mishandles pinned TLS certificate verification for IMAP and SMTP services using invalid TLS certificates (e.g., self-signed certificates) when the client system is not configured to use a system-provided PKCS#11 store. This allows a meddler in the middle to present a different invalid certificate to intercept incoming and outgoing mail.","modified":"2025-10-24T04:48:41Z","published":"2020-08-26T16:15:00Z","upstream":["CVE-2020-24661"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-24661"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/geary/-/issues/866"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/geary/-/commit/0fc8c7c62e8af5734f3ad17f158e5bed7f05fc18"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-24661"}],"affected":[{"package":{"name":"geary","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/geary@0.10.0-1ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.0-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"geary","binary_version":"0.10.0-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24661.json"}},{"package":{"name":"geary","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/geary@0.12.4-4~ubuntu18.04.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.0-0ubuntu1","0.12.0-1ubuntu1","0.12.4-4~ubuntu18.04.3"],"ecosystem_specific":{"binaries":[{"binary_name":"geary","binary_version":"0.12.4-4~ubuntu18.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24661.json"}},{"package":{"name":"geary","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/geary@3.36.1-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.32.0-1ubuntu1","3.34.1-4","3.34.2-1","3.36.0-2","3.36.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.36.1-1","binary_name":"geary"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24661.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}