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An exim4 security update has been released for Debian GNU/Linux 9 LTS to address several vulnerabilities, which could result in local privilege escalation and remote code execution.



DSA 4912-1: exim4 security update



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Debian Security Advisory DSA-4912-1 security@debian.org
  https://www.debian.org/security/ Salvatore Bonaccorso
May 04, 2021   https://www.debian.org/security/faq
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Package : exim4
CVE ID : 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-2020-28017 CVE-2020-28019 CVE-2020-28021
CVE-2020-28022 CVE-2020-28023 CVE-2020-28024 CVE-2020-28025
CVE-2020-28026

The Qualys Research Labs reported several vulnerabilities in Exim, a
mail transport agent, which could result in local privilege escalation
and remote code execution.

Details can be found in the Qualys advisory at
  https://www.qualys.com/2021/05/04/21nails/21nails.txt

For the stable distribution (buster), these problems have been fixed in
version 4.92-8+deb10u6.

We recommend that you upgrade your exim4 packages.

For the detailed security status of exim4 please refer to its security
tracker page at:
  https://security-tracker.debian.org/tracker/exim4

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/