USN-3587-1: Dovecot vulnerabilities

Ubuntu Security Notice USN-3587-1

5th 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 version:

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

CVE-2017-14461,

CVE-2017-15130


Source From: ubuntu.com.
Original article title: USN-3587-1: Dovecot vulnerabilities.
This full article can be read at: USN-3587-1: Dovecot vulnerabilities.

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