========================================================================== Ubuntu Security Notice USN-3587-1 March 05, 2018 dovecot vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 17.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Dovecot. Software Description: - dovecot: IMAP and POP3 email server Details: It was discovered that Dovecot incorrectly handled parsing certain email addresses. A remote attacker could use this issue to cause Dovecot to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2017-14461) It was discovered that Dovecot incorrectly handled TLS SNI config lookups. A remote attacker could possibly use this issue to cause Dovecot to crash, resulting in a denial of service. (CVE-2017-15130) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: dovecot-core 1:2.2.27-3ubuntu1.3 Ubuntu 16.04 LTS: dovecot-core 1:2.2.22-1ubuntu2.7 Ubuntu 14.04 LTS: dovecot-core 1:2.2.9-1ubuntu2.4 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3587-1 CVE-2017-14461, CVE-2017-15130 Package Information: https://launchpad.net/ubuntu/+source/dovecot/1:2.2.27-3ubuntu1.3 https://launchpad.net/ubuntu/+source/dovecot/1:2.2.22-1ubuntu2.7 https://launchpad.net/ubuntu/+source/dovecot/1:2.2.9-1ubuntu2.4