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Ubuntu Security Notice USN-3556-1

Ubuntu Security Notice USN-3556-1
Posted Feb 2, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3556-1 - It was discovered that Dovecot incorrectly handled certain authentications. An attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2017-15132
MD5 | 294630c680214a3ee5baa8d8152aa817

Ubuntu Security Notice USN-3556-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3556-1
February 01, 2018

dovecot vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Dovecot could be made to crash if it received specially crafted input.

Software Description:
- dovecot: IMAP and POP3 email server

Details:

It was discovered that Dovecot incorrectly handled certain
authentications. An attacker could possibly use this to cause a denial
of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.10:
dovecot-core 1:2.2.27-3ubuntu1.2

Ubuntu 16.04 LTS:
dovecot-core 1:2.2.22-1ubuntu2.6

Ubuntu 14.04 LTS:
dovecot-core 1:2.2.9-1ubuntu2.3

In general, a standard system update will make all the necessary
changes.

References:
https://www.ubuntu.com/usn/usn-3556-1
CVE-2017-15132

Package Information:
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.27-3ubuntu1.2
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.22-1ubuntu2.6
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.9-1ubuntu2.3

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