Gentoo: GLSA-202105-01: Exim: Multiple vulnerabilities | LinuxSecur...

Advisories

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Gentoo Linux Security Advisory                           GLSA 202105-01
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                                            https://security.gentoo.org/
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  Severity: High
     Title: Exim: Multiple vulnerabilities
      Date: May 04, 2021
      Bugs: #786945
        ID: 202105-01

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Synopsis
========

Multiple vulnerabilities have been found in Exim, the worst of which
allows remote attackers to execute arbitrary code.

Background
==========

Exim is a message transfer agent (MTA) designed to be a a highly
configurable, drop-in replacement for sendmail.

Affected packages
=================

     -------------------------------------------------------------------
      Package              /     Vulnerable     /            Unaffected
     -------------------------------------------------------------------
   1  mail-mta/exim                < 4.94.2                  >= 4.94.2

Description
===========

Multiple vulnerabilities have been discovered in Exim. Please review
the CVE identifiers referenced below for details.

Impact
======

A remote attacker, by connecting to the SMTP listener daemon, could
possibly execute arbitrary code with the privileges of the process or
cause a Denial of Service condition. Furthermore, a local attacker
could perform symlink attacks to overwrite arbitrary files with the
privileges of the user running the application or escalate privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Exim users should upgrade to the latest version:

   # emerge --sync
   # emerge --ask --oneshot --verbose ">=mail-mta/exim-4.94.2"

References
==========

[  1 ] CVE-2020-28007
        https://nvd.nist.gov/vuln/detail/CVE-2020-28007
[  2 ] CVE-2020-28008
        https://nvd.nist.gov/vuln/detail/CVE-2020-28008
[  3 ] CVE-2020-28009
        https://nvd.nist.gov/vuln/detail/CVE-2020-28009
[  4 ] CVE-2020-28010
        https://nvd.nist.gov/vuln/detail/CVE-2020-28010
[  5 ] CVE-2020-28011
        https://nvd.nist.gov/vuln/detail/CVE-2020-28011
[  6 ] CVE-2020-28012
        https://nvd.nist.gov/vuln/detail/CVE-2020-28012
[  7 ] CVE-2020-28013
        https://nvd.nist.gov/vuln/detail/CVE-2020-28013
[  8 ] CVE-2020-28014
        https://nvd.nist.gov/vuln/detail/CVE-2020-28014
[  9 ] CVE-2020-28015
        https://nvd.nist.gov/vuln/detail/CVE-2020-28015
[ 10 ] CVE-2020-28016
        https://nvd.nist.gov/vuln/detail/CVE-2020-28016
[ 11 ] CVE-2020-28017
        https://nvd.nist.gov/vuln/detail/CVE-2020-28017
[ 12 ] CVE-2020-28018
        https://nvd.nist.gov/vuln/detail/CVE-2020-28018
[ 13 ] CVE-2020-28019
        https://nvd.nist.gov/vuln/detail/CVE-2020-28019
[ 14 ] CVE-2020-28020
        https://nvd.nist.gov/vuln/detail/CVE-2020-28020
[ 15 ] CVE-2020-28021
        https://nvd.nist.gov/vuln/detail/CVE-2020-28021
[ 16 ] CVE-2020-28022
        https://nvd.nist.gov/vuln/detail/CVE-2020-28022
[ 17 ] CVE-2020-28023
        https://nvd.nist.gov/vuln/detail/CVE-2020-28023
[ 18 ] CVE-2020-28024
        https://nvd.nist.gov/vuln/detail/CVE-2020-28024
[ 19 ] CVE-2020-28025
        https://nvd.nist.gov/vuln/detail/CVE-2020-28025
[ 20 ] CVE-2020-28026
        https://nvd.nist.gov/vuln/detail/CVE-2020-28026
[ 21 ] CVE-2021-27216
        https://nvd.nist.gov/vuln/detail/CVE-2021-27216

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/202105-01

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2021 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

Gentoo: GLSA-202105-01: Exim: Multiple vulnerabilities

Summary

Multiple vulnerabilities have been discovered in Exim. Please review the CVE identifiers referenced below for details.

Resolution

All Exim users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=mail-mta/exim-4.94.2"

References

[ 1 ] CVE-2020-28007 https://nvd.nist.gov/vuln/detail/CVE-2020-28007 [ 2 ] CVE-2020-28008 https://nvd.nist.gov/vuln/detail/CVE-2020-28008 [ 3 ] CVE-2020-28009 https://nvd.nist.gov/vuln/detail/CVE-2020-28009 [ 4 ] CVE-2020-28010 https://nvd.nist.gov/vuln/detail/CVE-2020-28010 [ 5 ] CVE-2020-28011 https://nvd.nist.gov/vuln/detail/CVE-2020-28011 [ 6 ] CVE-2020-28012 https://nvd.nist.gov/vuln/detail/CVE-2020-28012 [ 7 ] CVE-2020-28013 https://nvd.nist.gov/vuln/detail/CVE-2020-28013 [ 8 ] CVE-2020-28014 https://nvd.nist.gov/vuln/detail/CVE-2020-28014 [ 9 ] CVE-2020-28015 https://nvd.nist.gov/vuln/detail/CVE-2020-28015 [ 10 ] CVE-2020-28016 https://nvd.nist.gov/vuln/detail/CVE-2020-28016 [ 11 ] CVE-2020-28017 https://nvd.nist.gov/vuln/detail/CVE-2020-28017 [ 12 ] CVE-2020-28018 https://nvd.nist.gov/vuln/detail/CVE-2020-28018 [ 13 ] CVE-2020-28019 https://nvd.nist.gov/vuln/detail/CVE-2020-28019 [ 14 ] CVE-2020-28020 https://nvd.nist.gov/vuln/detail/CVE-2020-28020 [ 15 ] CVE-2020-28021 https://nvd.nist.gov/vuln/detail/CVE-2020-28021 [ 16 ] CVE-2020-28022 https://nvd.nist.gov/vuln/detail/CVE-2020-28022 [ 17 ] CVE-2020-28023 https://nvd.nist.gov/vuln/detail/CVE-2020-28023 [ 18 ] CVE-2020-28024 https://nvd.nist.gov/vuln/detail/CVE-2020-28024 [ 19 ] CVE-2020-28025 https://nvd.nist.gov/vuln/detail/CVE-2020-28025 [ 20 ] CVE-2020-28026 https://nvd.nist.gov/vuln/detail/CVE-2020-28026 [ 21 ] CVE-2021-27216 https://nvd.nist.gov/vuln/detail/CVE-2021-27216

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202105-01

Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to [email protected] or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity
Severity: High
Title: Exim: Multiple vulnerabilities
Issued Date: May 04, 2021
Bugs: #786945
ID: 202105-01

Synopsis

Multiple vulnerabilities have been found in Exim, the worst of which allows remote attackers to execute arbitrary code.

Background

Exim is a message transfer agent (MTA) designed to be a a highly configurable, drop-in replacement for sendmail.

Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 mail-mta/exim < 4.94.2 >= 4.94.2

Impact

A remote attacker, by connecting to the SMTP listener daemon, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition. Furthermore, a local attacker could perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application or escalate privileges.

Workaround

There is no known workaround at this time.

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