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Gentoo Linux Security Advisory 201803-01

Gentoo Linux Security Advisory 201803-01
Posted Mar 6, 2018
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201803-1 - Multiple vulnerabilities have been found in Exim, the worst of which allows remote attackers to execute arbitrary code. Versions less than 4.90.1 are affected.

tags | advisory, remote, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2017-16943, CVE-2017-16944, CVE-2018-6789
MD5 | b820d6c0688dc3641432309326abc2d5

Gentoo Linux Security Advisory 201803-01

Change Mirror Download
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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
========

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 < 4.90.1 >= 4.90.1

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.

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-4.90.1"

References
==========

[ 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
============

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

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

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

License
=======

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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