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Gentoo: 201706-19 High: GNU C Library Multiple Security Threats

gentoo
Calendar Grey June 20, 2017
Scroller Gentoo Esm H88
Uncover critical vulnerabilities in GNU C Library implemented on Gentoo Linux, specifically targeting potential risks associated with execution privileges.
Multiple vulnerabilities have been found in the GNU C Library, the worst of which may allow execution of arbitrary code.

Summary

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

Topics%20covered

Topics Covered

security advisory high severity code execution multiple issues Gentoo Linux GNU C Library

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
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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.

Severity: High
Title: GNU C Library: Multiple vulnerabilities
Date: June 20, 2017
Bugs: #608698, #608706, #622220
ID: 201706-19

Topics%20covered

Topics Covered

security advisory high severity code execution multiple issues Gentoo Linux GNU C Library

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.

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Affected Packages

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

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.