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Ubuntu: 2021:4934-1 Critical: Exim Denial Of Service Threat

ubuntu
Calendar Grey May 4, 2021
Dist Ubuntu Esm H88
Multiple vulnerabilities have been addressed in OpenSSH, impacting several Debian distributions, enhancing secure shell access.
Several security issues were fixed in Exim.

Summary

Topics%20covered

Topics Covered

security advisory denial of service remote code execution exim Ubuntu update instructions software issue ubuntu Exim

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: exim4-base 4.94-15ubuntu1.2 exim4-daemon-heavy 4.94-15ubuntu1.2 exim4-daemon-light 4.94-15ubuntu1.2 Ubuntu 20.10: exim4-base 4.94-7ubuntu1.2 exim4-daemon-heavy 4.94-7ubuntu1.2 exim4-daemon-light 4.94-7ubuntu1.2 Ubuntu 20.04 LTS: exim4-base 4.93-13ubuntu1.5 exim4-daemon-heavy 4.93-13ubuntu1.5 exim4-daemon-light 4.93-13ubuntu1.5 Ubuntu 18.04 LTS: exim4-base 4.90.1-1ubuntu1.8 exim4-daemon-heavy 4.90.1-1ubuntu1.8 exim4-daemon-light 4.90.1-1ubuntu1.8 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4934-1

CVE-2020-28007, CVE-2020-28008, CVE-2020-28009, CVE-2020-28010,

CVE-2020-28011, CVE-2020-28012, CVE-2020-28013, CVE-2020-28014,

CVE-2020-28015, CVE-2020-28016, CVE-2020-28017, CVE-2020-28018,

CVE-2020-28019, CVE-2020-28020, CVE-2020-28021, CVE-2020-28022,

CVE-2020-28023, CVE-2020-28024, CVE-2020-28025, CVE-2020-28026,

CVE-2021-27216

Severity
critical
Lowest
Low
Medium
High
Critical

May 04, 2021

Topics%20covered

Topics Covered

security advisory denial of service remote code execution exim Ubuntu update instructions software issue ubuntu Exim

Package Information

https://launchpad.net/ubuntu/+source/exim4/4.94-15ubuntu1.2 https://launchpad.net/ubuntu/+source/exim4/4.94-7ubuntu1.2 https://launchpad.net/ubuntu/+source/exim4/4.93-13ubuntu1.5 https://launchpad.net/ubuntu/+source/exim4/4.90.1-1ubuntu1.8

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