Several security issues were fixed in Dovecot.
USN-3587-1 fixed a vulnerability in Dovecot. This update provides the corresponding update for Ubuntu 12.04 ESM.
2 April 2018
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Dovecot.
USN-3587-1 fixed a vulnerability in Dovecot. This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory 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)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon