Ubuntu 5741-1: Exim vulnerability | LinuxSecurity.com
==========================================================================
Ubuntu Security Notice USN-5741-1
November 24, 2022

exim4 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Exim could be made to crash or run programs if it processed specially
crafted regular expressions.

Software Description:
- exim4: Exim is a mail transport agent

Details:

It was discovered that Exim incorrectly handled certain regular
expressions. An attacker could use this issue to cause Exim to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 22.10:
   exim4-base                      4.96-3ubuntu1.1
   exim4-daemon-heavy              4.96-3ubuntu1.1
   exim4-daemon-light              4.96-3ubuntu1.1

Ubuntu 22.04 LTS:
   exim4-base                      4.95-4ubuntu2.2
   exim4-daemon-heavy              4.95-4ubuntu2.2
   exim4-daemon-light              4.95-4ubuntu2.2

Ubuntu 20.04 LTS:
   exim4-base                      4.93-13ubuntu1.7
   exim4-daemon-heavy              4.93-13ubuntu1.7
   exim4-daemon-light              4.93-13ubuntu1.7

Ubuntu 18.04 LTS:
   exim4-base                      4.90.1-1ubuntu1.10
   exim4-daemon-heavy              4.90.1-1ubuntu1.10
   exim4-daemon-light              4.90.1-1ubuntu1.10

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

References:
   https://ubuntu.com/security/notices/USN-5741-1
   CVE-2022-3559

Package Information:
   https://launchpad.net/ubuntu/+source/exim4/4.96-3ubuntu1.1
   https://launchpad.net/ubuntu/+source/exim4/4.95-4ubuntu2.2
   https://launchpad.net/ubuntu/+source/exim4/4.93-13ubuntu1.7
   https://launchpad.net/ubuntu/+source/exim4/4.90.1-1ubuntu1.10

Ubuntu 5741-1: Exim vulnerability

November 24, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Exim could be made to crash or run programs if it processed specially crafted regular expressions. Software Description: - exim4: Exim is a mail transport agent Details: It was discovered that Exim incorrectly handled certain regular expressions. An attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: exim4-base 4.96-3ubuntu1.1 exim4-daemon-heavy 4.96-3ubuntu1.1 exim4-daemon-light 4.96-3ubuntu1.1 Ubuntu 22.04 LTS: exim4-base 4.95-4ubuntu2.2 exim4-daemon-heavy 4.95-4ubuntu2.2 exim4-daemon-light 4.95-4ubuntu2.2 Ubuntu 20.04 LTS: exim4-base 4.93-13ubuntu1.7 exim4-daemon-heavy 4.93-13ubuntu1.7 exim4-daemon-light 4.93-13ubuntu1.7 Ubuntu 18.04 LTS: exim4-base 4.90.1-1ubuntu1.10 exim4-daemon-heavy 4.90.1-1ubuntu1.10 exim4-daemon-light 4.90.1-1ubuntu1.10 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5741-1

CVE-2022-3559

Severity
Ubuntu Security Notice USN-5741-1

Package Information

https://launchpad.net/ubuntu/+source/exim4/4.96-3ubuntu1.1 https://launchpad.net/ubuntu/+source/exim4/4.95-4ubuntu2.2 https://launchpad.net/ubuntu/+source/exim4/4.93-13ubuntu1.7 https://launchpad.net/ubuntu/+source/exim4/4.90.1-1ubuntu1.10

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