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Gentoo Linux Security Advisory 201701-05

Gentoo Linux Security Advisory 201701-05
Posted Jan 2, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201701-5 - A vulnerability in BusyBox might allow remote attackers to cause a Denial of Service condition. Versions less than 1.25.1 are affected.

tags | advisory, remote, denial of service
systems | linux, gentoo
advisories | CVE-2016-6301
MD5 | f7cc1f0f888c88dc3e1d48cb6ac0a4b6

Gentoo Linux Security Advisory 201701-05

Change Mirror Download

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Gentoo Linux Security Advisory GLSA 201701-05
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https://security.gentoo.org/
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Severity: Normal
Title: BusyBox: Denial of Service
Date: January 01, 2017
Bugs: #590478
ID: 201701-05

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Synopsis
========

A vulnerability in BusyBox might allow remote attackers to cause a
Denial of Service condition.

Background
==========

BusyBox is a set of tools for embedded systems and is a replacement for
GNU Coreutils.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-apps/busybox < 1.25.1 >= 1.25.1

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

The recv_and_process_client_pkt function in networking/ntpd.c in
BusyBox allows remote attackers to cause a Denial of Service (CPU and
bandwidth consumption) via a forged NTP packet, which triggers a
communication loop.

Impact
======

A remote attacker might send a specially crafted package to a machine
running BusyBox ntpd, possibly resulting in a Denial of Service
condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All BusyBox users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/busybox-1.25.1"

References
==========

[ 1 ] CVE-2016-6301
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6301

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

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

https://security.gentoo.org/glsa/201701-05

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 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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