USN-4456-1 fixed several vulnerabilities in Dovecot. This update provides the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
It was discovered that Dovecot incorrectly handled deeply nested MIME parts. A remote attacker could possibly use this issue to cause Dovecot to consume resources, resulting in a denial of service. (CVE-2020-12100)
It was discovered that Dovecot incorrectly handled memory when using NTLM. A remote attacker could possibly use this issue to cause Dovecot to crash, resulting in a denial of service. (CVE-2020-12673)
It was discovered that the Dovecot RPA mechanism incorrectly handled zero-length messages. A remote attacker could possibly use this issue to cause Dovecot to crash, resulting in a denial of service. (CVE-2020-12674)
{ "availability": "No subscription required", "binaries": [ { "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-mysql" }, { "binary_version": "1:2.2.9-1ubuntu2.6+esm3", "binary_name": "dovecot-core" }, { "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-ldap" }, { "binary_version": "1:2.2.9-1ubuntu2.6+esm3", "binary_name": "dovecot-sqlite" }, { "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-pop3d" }, { "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-managesieved" }, { "binary_version": "1:2.2.9-1ubuntu2.6+esm3", "binary_name": "mail-stack-delivery" }, { "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-lmtpd" }, { "binary_version": "1:2.2.9-1ubuntu2.6+esm3", "binary_name": "dovecot-solr" } ] }