Timo Longin discovered that Postfix incorrectly handled certain email line endings. A remote attacker could possibly use this issue to bypass an email authentication mechanism, allowing domain spoofing and potential spamming.
Please note that certain configuration changes are required to address this issue. They are not enabled by default for backward compatibility. Information can be found at https://www.postfix.org/smtp-smuggling.html.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix" }, { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix-cdb" }, { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix-dev" }, { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix-doc" }, { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix-ldap" }, { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix-mysql" }, { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix-pcre" }, { "binary_version": "2.11.0-1ubuntu1.2+esm2", "binary_name": "postfix-pgsql" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix" }, { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix-cdb" }, { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix-dev" }, { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix-doc" }, { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix-ldap" }, { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix-mysql" }, { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix-pcre" }, { "binary_version": "3.1.0-3ubuntu0.4+esm2", "binary_name": "postfix-pgsql" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-cdb" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-cdb-dbgsym" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-dbgsym" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-doc" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-ldap" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-ldap-dbgsym" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-lmdb" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-lmdb-dbgsym" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-mysql" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-mysql-dbgsym" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-pcre" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-pcre-dbgsym" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-pgsql" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-pgsql-dbgsym" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-sqlite" }, { "binary_version": "3.3.0-1ubuntu0.4+esm2", "binary_name": "postfix-sqlite-dbgsym" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-cdb" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-cdb-dbgsym" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-dbgsym" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-doc" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-ldap" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-ldap-dbgsym" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-lmdb" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-lmdb-dbgsym" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-mysql" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-mysql-dbgsym" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-pcre" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-pcre-dbgsym" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-pgsql" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-pgsql-dbgsym" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-sqlite" }, { "binary_version": "3.4.13-0ubuntu1.3", "binary_name": "postfix-sqlite-dbgsym" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-cdb" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-cdb-dbgsym" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-dbgsym" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-doc" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-ldap" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-ldap-dbgsym" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-lmdb" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-lmdb-dbgsym" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-mysql" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-mysql-dbgsym" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-pcre" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-pcre-dbgsym" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-pgsql" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-pgsql-dbgsym" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-sqlite" }, { "binary_version": "3.6.4-1ubuntu1.2", "binary_name": "postfix-sqlite-dbgsym" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-cdb" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-cdb-dbgsym" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-dbgsym" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-doc" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-ldap" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-ldap-dbgsym" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-lmdb" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-lmdb-dbgsym" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-mysql" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-mysql-dbgsym" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-pcre" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-pcre-dbgsym" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-pgsql" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-pgsql-dbgsym" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-sqlite" }, { "binary_version": "3.8.1-2ubuntu0.1", "binary_name": "postfix-sqlite-dbgsym" } ] }