Ubuntu Security Notice USN-3587-1
5th March, 2018
A security issue affects these releases of Ubuntu and its
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Several security issues were fixed in Dovecot.
– IMAP and POP3 email server
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
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
- Ubuntu 17.10:
- Ubuntu 16.04 LTS:
- Ubuntu 14.04 LTS:
To update your system, please follow these instructions:
In general, a standard system update will make all the necessary changes.