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Gentoo Linux Security Advisory GLSA 202003-47
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https://security.gentoo.org/
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Severity: High
Title: Exim: Heap-based buffer overflow
Date: March 20, 2020
Bugs: #701282
ID: 202003-47
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Synopsis
========
A vulnerability in Exim could allow a remote attacker 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 < 4.92.3 >= 4.92.3
Description
===========
It was discovered that Exim incorrectly handled certain string
operations.
Impact
======
A remote attacker, able to connect to a vulnerable Exim instance, 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-4.92.3”
References
==========
[ 1 ] CVE-2019-16928
https://nvd.nist.gov/vuln/detail/CVE-2019-16928
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202003-47
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 2020 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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