USN-3587-1: Dovecot vulnerabilities

5 March 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

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.

References