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Gentoo Linux Security Advisory                           GLSA 201804-05
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: ISC DHCP: Multiple vulnerabilities
     Date: April 08, 2018
     Bugs: #644708, #649010
       ID: 201804-05

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Synopsis
========

Multiple vulnerabilities have been found in ISC DHCP, the worst of
which could allow for the remote execution of arbitrary code.

Background
==========

ISC DHCP is a Dynamic Host Configuration Protocol (DHCP) client/server.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-misc/dhcp               < 4.3.6_p1               >= 4.3.6_p1 

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

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

Impact
======

Remote attackers could execute arbitrary code, cause a Denial of
Service condition, or have other unspecified impacts.

Workaround
==========

There are no known workarounds at this time for CVE-2018-5732 or
CVE-2018-5733.

In accordance with upstream documentation, the recommended workaround
for CVE-2017-3144 is, "to disallow access to the OMAPI control port
from unauthorized clients (in accordance with best practices for server
operation)."

Resolution
==========

All DHCP users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/dhcp-4.3.6_p1"

References
==========

[ 1 ] CVE-2017-3144
      https://nvd.nist.gov/vuln/detail/CVE-2017-3144
[ 2 ] CVE-2018-5732
      https://nvd.nist.gov/vuln/detail/CVE-2018-5732
[ 3 ] CVE-2018-5733
      https://nvd.nist.gov/vuln/detail/CVE-2018-5733

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

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

 https://security.gentoo.org/glsa/201804-05

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