1. Ubuntu Security Notices
  2. USN-4674-2

USN-4674-2: Dovecot vulnerability

Publication date

4 January 2021

Overview

Dovecot could be made to denial of service if it received a specially crafted MIME.

Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

USN-4674-1 fixed a vulnerability in Dovecot. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Innokentii Sennovskiy discovered that Dovecot incorrectly handled MIME
parsing. A remote attacker could possibly use this issue to cause Dovecot
to crash, resulting in a denial of service. (CVE-2020-25275)

USN-4674-1 fixed a vulnerability in Dovecot. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Innokentii Sennovskiy discovered that Dovecot incorrectly handled MIME
parsing. A remote attacker could possibly use this issue to cause Dovecot
to crash, resulting in a denial of service. (CVE-2020-25275)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
14.04 trusty dovecot-core –  1:2.2.9-1ubuntu2.6+esm4

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References

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