Advisory Published

USN-4124-1: Exim vulnerability

First published: Fri Sep 06 2019(Updated: )

It was discovered that Exim incorrectly handled certain decoding operations. A remote attacker could possibly use this issue to execute arbitrary commands.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/exim4-daemon-heavy<4.92-4ubuntu1.3
4.92-4ubuntu1.3
=19.04
All of
ubuntu/exim4-daemon-light<4.92-4ubuntu1.3
4.92-4ubuntu1.3
=19.04
All of
ubuntu/exim4-daemon-heavy<4.90.1-1ubuntu1.4
4.90.1-1ubuntu1.4
=18.04
All of
ubuntu/exim4-daemon-light<4.90.1-1ubuntu1.4
4.90.1-1ubuntu1.4
=18.04
All of
ubuntu/exim4-daemon-heavy<4.86.2-2ubuntu2.5
4.86.2-2ubuntu2.5
=16.04
All of
ubuntu/exim4-daemon-light<4.86.2-2ubuntu2.5
4.86.2-2ubuntu2.5
=16.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID of the Exim vulnerability?

    The vulnerability ID of the Exim vulnerability is USN-4124-1.

  • What does the Exim vulnerability allow attackers to do?

    The Exim vulnerability allows remote attackers to execute arbitrary commands.

  • Which versions of Ubuntu are affected by the Exim vulnerability?

    The Exim vulnerability affects Ubuntu versions 19.04, 18.04, and 16.04.

  • How can I fix the Exim vulnerability?

    To fix the Exim vulnerability, update the exim4-daemon-heavy and exim4-daemon-light packages to version 4.92-4ubuntu1.3 for Ubuntu 19.04, version 4.90.1-1ubuntu1.4 for Ubuntu 18.04, and version 4.86.2-2ubuntu2.5 for Ubuntu 16.04.

  • Where can I find more information about the Exim vulnerability?

    You can find more information about the Exim vulnerability at the following references: 1. https://ubuntu.com/security/CVE-2019-15846 2. https://launchpad.net/bugs/1843041 3. https://ubuntu.com/security/notices/USN-4124-2

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