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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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