GLSA 201711-11: VDE: Privilege escalation

http://security.gentoo.org/

Severity:	normal
Title:	VDE: Privilege escalation
Date:	11/12/2017
Bugs:	#603382
ID:	201711-11

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	Architecture(s)
net-misc/vde	< 2.3.2-r4	>= 2.3.2-r4	All supported architectures

Description

It was discovered that Gentoo’s 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

CVE-2017-16638

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201711-11.xml

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.