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[gentoo-announce] [ GLSA 201705-11 ] Xen: Multiple vulnerabilities

Posted on 26 May 2017
Gentoo-announce

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From: Thomas Deutschmann <whissi@gentoo.org>
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
Message-ID: <87521aac-965e-d76a-0ab4-c207bf1789a7@gentoo.org>
Subject: [ GLSA 201705-11 ] Xen: Multiple vulnerabilities

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Gentoo Linux Security Advisory GLSA 201705-11
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https://security.gentoo.org/
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Severity: Normal
Title: Xen: Multiple vulnerabilities
Date: May 26, 2017
Bugs: #615980
ID: 201705-11

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Synopsis
========
Multiple vulnerabilities have been found in Xen, the worst of which
could allow for privilege escalation.

Background
==========
Xen is a bare-metal hypervisor.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-emulation/xen < 4.7.2-r1 >= 4.7.2-r1
2 app-emulation/xen-tools < 4.7.2 >= 4.7.2
3 app-emulation/xen-pvgrub
< 4.7.2 >= 4.7.2
-------------------------------------------------------------------
3 affected packages

Description
===========
Multiple vulnerabilities have been discovered in Xen. Please review the
CVE identifiers and Xen Security Advisory referenced below for details.

Impact
======
A local attacker could potentially execute arbitrary code with
privileges of Xen (QEMU) process on the host, gain privileges on the
host system, or cause a Denial of Service condition.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All Xen users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/xen-4.7.2-r1:0"

All Xen Tools users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot -v ">=app-emulation/xen-tools-4.7.2:0"

All Xen pvgrub users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot -v ">=app-emulation/xen-pvgrub-4.7.2:0"

References
==========
[ 1 ] CVE-2017-8903
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-8903
[ 2 ] CVE-2017-8904
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-8904
[ 3 ] CVE-2017-8905
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-8905

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

https://security.gentoo.org/glsa/201705-11

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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