{"id":"UBUNTU-CVE-2021-33515","details":"The submission service in Dovecot before 2.3.15 allows STARTTLS command injection in lib-smtp. Sensitive information can be redirected to an attacker-controlled address.","modified":"2026-04-22T12:54:30.745475Z","published":"2021-06-21T12:00:00Z","related":["USN-4993-1"],"upstream":["CVE-2021-33515"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-33515"},{"type":"REPORT","url":"https://dovecot.org/pipermail/dovecot-news/2021-June/000457.html"},{"type":"REPORT","url":"https://dovecot.org/pipermail/dovecot-news/2021-June/000459.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4993-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-33515"}],"affected":[{"package":{"name":"dovecot","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dovecot@1:2.3.7.2-1ubuntu3.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.3.7.2-1ubuntu3.4"}]}],"versions":["1:2.3.4.1-5ubuntu3","1:2.3.7.2-1ubuntu1","1:2.3.7.2-1ubuntu2","1:2.3.7.2-1ubuntu3","1:2.3.7.2-1ubuntu3.1","1:2.3.7.2-1ubuntu3.2","1:2.3.7.2-1ubuntu3.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"dovecot-auth-lua","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_version":"1:2.3.7.2-1ubuntu3.4","binary_name":"dovecot-core"},{"binary_name":"dovecot-gssapi","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-imapd","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-ldap","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-lmtpd","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-lucene","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-managesieved","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-mysql","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-pgsql","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-pop3d","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-sieve","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-solr","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-sqlite","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"dovecot-submissiond","binary_version":"1:2.3.7.2-1ubuntu3.4"},{"binary_name":"mail-stack-delivery","binary_version":"1:2.3.7.2-1ubuntu3.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33515.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}