{"id":"UBUNTU-CVE-2020-24386","details":"An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).","modified":"2026-04-22T12:29:16.753328Z","published":"2021-01-04T12:00:00Z","related":["USN-4674-1"],"upstream":["CVE-2020-24386"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-24386"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4674-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-24386"}],"affected":[{"package":{"name":"dovecot","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/dovecot@1:2.2.33.2-1ubuntu4.7?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.2.33.2-1ubuntu4.7"}]}],"versions":["1:2.2.27-3ubuntu1","1:2.2.33.2-1ubuntu1","1:2.2.33.2-1ubuntu2","1:2.2.33.2-1ubuntu3","1:2.2.33.2-1ubuntu4","1:2.2.33.2-1ubuntu4.1","1:2.2.33.2-1ubuntu4.2","1:2.2.33.2-1ubuntu4.3","1:2.2.33.2-1ubuntu4.4","1:2.2.33.2-1ubuntu4.5","1:2.2.33.2-1ubuntu4.6"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1:2.2.33.2-1ubuntu4.7","binary_name":"dovecot-core"},{"binary_name":"dovecot-gssapi","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-imapd","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-ldap","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-lmtpd","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-managesieved","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-mysql","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-pgsql","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_version":"1:2.2.33.2-1ubuntu4.7","binary_name":"dovecot-pop3d"},{"binary_name":"dovecot-sieve","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-solr","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"dovecot-sqlite","binary_version":"1:2.2.33.2-1ubuntu4.7"},{"binary_name":"mail-stack-delivery","binary_version":"1:2.2.33.2-1ubuntu4.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24386.json"}},{"package":{"name":"dovecot","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dovecot@1:2.3.7.2-1ubuntu3.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.3.7.2-1ubuntu3.3"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1:2.3.7.2-1ubuntu3.3","binary_name":"dovecot-auth-lua"},{"binary_name":"dovecot-core","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-gssapi","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_version":"1:2.3.7.2-1ubuntu3.3","binary_name":"dovecot-imapd"},{"binary_name":"dovecot-ldap","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-lmtpd","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-lucene","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-managesieved","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-mysql","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-pgsql","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-pop3d","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-sieve","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"dovecot-solr","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_version":"1:2.3.7.2-1ubuntu3.3","binary_name":"dovecot-sqlite"},{"binary_name":"dovecot-submissiond","binary_version":"1:2.3.7.2-1ubuntu3.3"},{"binary_name":"mail-stack-delivery","binary_version":"1:2.3.7.2-1ubuntu3.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24386.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}