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_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", "binary_version": "2.11.0-1ubuntu1.2+esm2" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "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", "binary_version": "3.1.0-3ubuntu0.4+esm2" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "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", "binary_version": "3.3.0-1ubuntu0.4+esm2" } ] }
{ "availability": "No subscription required", "binaries": [ { "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", "binary_version": "3.4.13-0ubuntu1.3" } ] }
{ "availability": "No subscription required", "binaries": [ { "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", "binary_version": "3.6.4-1ubuntu1.2" } ] }