1. Ubuntu Security Notices
  2. USN-4934-2

USN-4934-2: Exim vulnerabilities

Publication date

6 May 2021

Overview

Several security issues were fixed in Exim.

Releases

Packages

  • exim4 - Exim is a mail transport agent

Details

USN-4934-1 fixed several vulnerabilities in Exim. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
CVE-2020-28026 only affected Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that Exim contained multiple security issues. An attacker
could use these issues to cause a denial of service, execute arbitrary
code remotely, obtain sensitive information, or escalate local privileges.

USN-4934-1 fixed several vulnerabilities in Exim. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
CVE-2020-28026 only affected Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that Exim contained multiple security issues. An attacker
could use these issues to cause a denial of service, execute arbitrary
code remotely, obtain sensitive information, or escalate local privileges.

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
16.04 xenial exim4-base –  4.86.2-2ubuntu2.6+esm1  
exim4-daemon-heavy –  4.86.2-2ubuntu2.6+esm1  
exim4-daemon-light –  4.86.2-2ubuntu2.6+esm1  
14.04 trusty exim4-base –  4.82-3ubuntu2.4+esm3  
exim4-daemon-heavy –  4.82-3ubuntu2.4+esm3  
exim4-daemon-light –  4.82-3ubuntu2.4+esm3  

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References

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