{"id":"USN-4456-2","summary":"dovecot vulnerabilities","details":"USN-4456-1 fixed several vulnerabilities in Dovecot. This update provides\nthe corresponding update for Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that Dovecot incorrectly handled deeply nested MIME\n parts. A remote attacker could possibly use this issue to cause Dovecot to\n consume resources, resulting in a denial of service. (CVE-2020-12100)\n\n It was discovered that Dovecot incorrectly handled memory when using NTLM.\n A remote attacker could possibly use this issue to cause Dovecot to crash,\n resulting in a denial of service. (CVE-2020-12673)\n\n It was discovered that the Dovecot RPA mechanism incorrectly handled\n zero-length messages. A remote attacker could possibly use this issue to\n cause Dovecot to crash, resulting in a denial of service. (CVE-2020-12674)\n","modified":"2026-02-10T04:41:54Z","published":"2020-08-17T12:32:32Z","related":["UBUNTU-CVE-2020-12100","UBUNTU-CVE-2020-12673","UBUNTU-CVE-2020-12674"],"upstream":["CVE-2020-12100","CVE-2020-12673","CVE-2020-12674","UBUNTU-CVE-2020-12100","UBUNTU-CVE-2020-12673","UBUNTU-CVE-2020-12674"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4456-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12100"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12673"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12674"}],"affected":[{"package":{"name":"dovecot","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/dovecot@1:2.2.9-1ubuntu2.6+esm3?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.2.9-1ubuntu2.6+esm3"}]}],"versions":["1:2.1.7-7ubuntu3","1:2.2.9-1ubuntu1","1:2.2.9-1ubuntu2","1:2.2.9-1ubuntu2.1","1:2.2.9-1ubuntu2.3","1:2.2.9-1ubuntu2.4","1:2.2.9-1ubuntu2.5","1:2.2.9-1ubuntu2.6","1:2.2.9-1ubuntu2.6+esm1","1:2.2.9-1ubuntu2.6+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"dovecot-core","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-dev","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-gssapi","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-imapd","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-ldap","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-lmtpd","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-managesieved","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-mysql","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-pgsql","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-pop3d","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-sieve","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-solr","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"dovecot-sqlite","binary_version":"1:2.2.9-1ubuntu2.6+esm3"},{"binary_name":"mail-stack-delivery","binary_version":"1:2.2.9-1ubuntu2.6+esm3"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-12100"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-12673"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-12674"}],"ecosystem":"Ubuntu:Pro:14.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4456-2.json"}}],"schema_version":"1.7.3"}