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Ubuntu 20.04 LTS USN-5574-1 Exim Crash Risk and Code Execution

ubuntu
Calendar Grey August 22, 2022
Dist Ubuntu Esm H88
Exim vulnerability may allow attackers to cause a crash or trigger arbitrary code execution. Ensure you verify and apply updates for all impacted Ubuntu releases.
Exim could be made to crash of execute arbitrary code if it received a specially crafted input.

Summary

Exim could be made to crash of execute arbitrary code if it

received a specially crafted input.

Software Description:

- exim4: Exim is a mail transport agent

Details:

It was discovered that Exim incorrectly handled certain inputs.

An attacker could possibly use this issue to cause a crash or

execute arbitrary code.

Topics%20covered

Topics Covered

security advisory code execution exim ubuntu crash risk

Update Instructions

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

Ubuntu 20.04 LTS:
  exim4-base                      4.93-13ubuntu1.6
  exim4-daemon-heavy              4.93-13ubuntu1.6
  exim4-daemon-light              4.93-13ubuntu1.6

Ubuntu 18.04 LTS:
  exim4-base                      4.90.1-1ubuntu1.9
  exim4-daemon-heavy              4.90.1-1ubuntu1.9
  exim4-daemon-light              4.90.1-1ubuntu1.9

Ubuntu 16.04 ESM:
  exim4-base                      4.86.2-2ubuntu2.6+esm2
  exim4-daemon-heavy              4.86.2-2ubuntu2.6+esm2
  exim4-daemon-light              4.86.2-2ubuntu2.6+esm2

Ubuntu 14.04 ESM:
  exim4-base                      4.82-3ubuntu2.4+esm4
  exim4-daemon-heavy              4.82-3ubuntu2.4+esm4
  exim4-daemon-light              4.82-3ubuntu2.4+esm4

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

References

https://ubuntu.com/security/notices/USN-5574-1

CVE-2022-37452

Severity
important
Lowest
Low
Medium
High
Critical

August 22, 2022

Topics%20covered

Topics Covered

security advisory code execution exim ubuntu crash risk

Package Information

https://launchpad.net/ubuntu/+source/exim4/4.93-13ubuntu1.6
https://launchpad.net/ubuntu/+source/exim4/4.90.1-1ubuntu1.9

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