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Gentoo Linux Security Advisory 201711-11

Gentoo Linux Security Advisory 201711-11
Posted Nov 13, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201711-11 - A vulnerability was discovered in VDE which may allow local users to gain root privileges. Versions less than 2.3.2-r4 are affected.

tags | advisory, local, root
systems | linux, gentoo
advisories | CVE-2017-16638
MD5 | a90c470fafed0730b44df4b87f46647a

Gentoo Linux Security Advisory 201711-11

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 201711-11
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https://security.gentoo.org/
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Severity: Normal
Title: VDE: Privilege escalation
Date: November 12, 2017
Bugs: #603382
ID: 201711-11

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Synopsis
========

A vulnerability was discovered in VDE which may allow local users to
gain root privileges.

Background
==========

VDE is an ethernet compliant virtual network that can be spawned over a
set of physical computer over the Internet.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/vde < 2.3.2-r4 >= 2.3.2-r4

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

It was discovered that Gentooas default VDE installation suffered from
a privilege escalation vulnerability in the init script. This script
calls an unsafe 'chown' command which gives members from "qemu" group
root privileges.

Impact
======

A local attacker could escalate privileges to root.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All VDE users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/vde-2.3.2-r4"

References
==========

[ 1 ] CVE-2017-16638
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-16638

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

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

https://security.gentoo.org/glsa/201711-11

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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