USN-4361-1: Dovecot vulnerabilities

18 May 2020

dovecot vulnerabilities

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

  • Ubuntu 20.04 LTS
  • Ubuntu 19.10

Summary

Several security issues were fixed in Dovecot.

Software Description

  • dovecot - IMAP and POP3 email server

Details

Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-10957, CVE-2020-10967)

Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2020-10958)

Update instructions

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

Ubuntu 20.04 LTS
dovecot-core - 1:2.3.7.2-1ubuntu3.1
Ubuntu 19.10
dovecot-core - 1:2.3.4.1-5ubuntu3.1

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