{"id":"USN-3258-2","summary":"dovecot regression","details":"USN-3258-1 intended to fix a vulnerability in Dovecot. Further investigation\nrevealed that only Dovecot versions 2.2.26 and newer were affected by the\nvulnerability. Additionally, the change introduced a regression when Dovecot\nwas configured to use the \"dict\" authentication database. This update reverts\nthe change. We apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that Dovecot incorrectly handled some usernames. An attacker\n could possibly use this issue to cause Dovecot to hang or crash, resulting in a\n denial of service.\n","modified":"2026-04-22T09:34:50.797275Z","published":"2017-04-11T19:41:41Z","upstream":["CVE-2017-2669","UBUNTU-CVE-2017-2669"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3258-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-2669"}],"affected":[{"package":{"name":"dovecot","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/dovecot@1:2.2.22-1ubuntu2.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.2.22-1ubuntu2.4"}]}],"versions":["1:2.2.18-2ubuntu2","1:2.2.22-1ubuntu1","1:2.2.22-1ubuntu2","1:2.2.22-1ubuntu2.1","1:2.2.22-1ubuntu2.2","1:2.2.22-1ubuntu2.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1:2.2.22-1ubuntu2.4","binary_name":"dovecot-core"},{"binary_name":"dovecot-gssapi","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_name":"dovecot-imapd","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_version":"1:2.2.22-1ubuntu2.4","binary_name":"dovecot-ldap"},{"binary_name":"dovecot-lmtpd","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_name":"dovecot-lucene","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_name":"dovecot-managesieved","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_name":"dovecot-mysql","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_name":"dovecot-pgsql","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_version":"1:2.2.22-1ubuntu2.4","binary_name":"dovecot-pop3d"},{"binary_version":"1:2.2.22-1ubuntu2.4","binary_name":"dovecot-sieve"},{"binary_name":"dovecot-solr","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_name":"dovecot-sqlite","binary_version":"1:2.2.22-1ubuntu2.4"},{"binary_name":"mail-stack-delivery","binary_version":"1:2.2.22-1ubuntu2.4"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2017-2669"}],"ecosystem":"Ubuntu:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3258-2.json"}}],"schema_version":"1.7.5"}