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Gentoo Linux Security Advisory GLSA 201706-19
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https://security.gentoo.org/
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Severity: High
Title: GNU C Library: Multiple vulnerabilities
Date: June 20, 2017
Bugs: #608698, #608706, #622220
ID: 201706-19

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Synopsis
========

Multiple vulnerabilities have been found in the GNU C Library, the
worst of which may allow execution of arbitrary code.

Background
==========

The GNU C library is the standard C library used by Gentoo Linux
systems.

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

——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 sys-libs/glibc < 2.23-r4 >= 2.23-r4

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

Multiple vulnerabilities have been discovered in the GNU C Library.
Please review the CVE identifiers and Qualys’ security advisory
referenced below for details.

Impact
======

An attacker could possibly execute arbitrary code with the privileges
of the process, escalate privileges or cause a Denial of Service
condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU C Library users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=sys-libs/glibc-2.23-r4”

References
==========

[ 1 ] CVE-2015-5180
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-5180
[ 2 ] CVE-2016-6323
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6323
[ 3 ] CVE-2017-1000366
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000366
[ 4 ] Qualys Security Advisory – The Stack Clash
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt

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

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

https://security.gentoo.org/glsa/201706-19

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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