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Gentoo Linux Security Advisory 201710-27

Gentoo Linux Security Advisory 201710-27
Posted Oct 23, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201710-27 - Multiple vulnerabilities have been found in Dnsmasq, the worst of which may allow remote attackers to execute arbitrary code. Versions less than 2.78 are affected.

tags | advisory, remote, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2017-14491, CVE-2017-14492, CVE-2017-14493, CVE-2017-14494, CVE-2017-14495, CVE-2017-14496
SHA-256 | 38689f62169ad9727d20db758cda09ebd860a0cf445ff581a92ce63c5f6b096a

Gentoo Linux Security Advisory 201710-27

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 201710-27
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https://security.gentoo.org/
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Severity: Normal
Title: Dnsmasq: Multiple vulnerabilities
Date: October 23, 2017
Bugs: #632692
ID: 201710-27

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Synopsis
========

Multiple vulnerabilities have been found in Dnsmasq, the worst of which
may allow remote attackers to execute arbitrary code.

Background
==========

Dnsmasq is a lightweight and easily-configurable DNS forwarder and DHCP
server.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-dns/dnsmasq < 2.78 >= 2.78

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

Multiple vulnerabilities have been discovered in Dnsmasq. Please review
the references below for details.

Impact
======

A remote attacker could execute arbitrary code or cause a Denial of
Service condition via crafted DNS, IPv6, or DHCPv6 packets.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Dnsmasq users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.78"

References
==========

[ 1 ] CVE-2017-14491
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-14491
[ 2 ] CVE-2017-14492
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-14492
[ 3 ] CVE-2017-14493
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-14493
[ 4 ] CVE-2017-14494
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-14494
[ 5 ] CVE-2017-14495
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-14495
[ 6 ] CVE-2017-14496
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-14496

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

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

https://security.gentoo.org/glsa/201710-27

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 2017 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.

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