[ GLSA 201803-01 ] Exim: Multiple vulnerabilities

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From: Thomas Deutschmann
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
Message-ID:
Subject: [ GLSA 201803-01 ] Exim: Multiple vulnerabilities

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Gentoo Linux Security Advisory GLSA 201803-01
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https://security.gentoo.org/
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Severity: High
Title: Exim: Multiple vulnerabilities
Date: March 06, 2018
Bugs: #638772, #647240
ID: 201803-01

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

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

Affected packages
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——————————————————————-
Package / Vulnerable / Unaffected
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1 mail-mta/exim =3D 4.90.1

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

Impact
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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.

Workaround
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There is no known workaround at this time.

Resolution
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All Exim users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=3Dmail-mta/exim-4.90.1″

References
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[ 1 ] CVE-2017-16943
https://nvd.nist.gov/vuln/detail/CVE-2017-16943
[ 2 ] CVE-2017-16944
https://nvd.nist.gov/vuln/detail/CVE-2017-16944
[ 3 ] CVE-2018-6789
https://nvd.nist.gov/vuln/detail/CVE-2018-6789

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

https://security.gentoo.org/glsa/201803-01

Concerns?
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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
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
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Copyright 2018 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

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