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Gentoo Linux Security Advisory                           GLSA 201702-24
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: LibVNCServer/LibVNCClient: Multiple vulnerabilities
     Date: February 20, 2017
     Bugs: #605326
       ID: 201702-24

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Synopsis
========

Multiple vulnerabilities have been found in LibVNCServer/LibVNCClient,
the worst of which allows remote attackers to execute arbitrary code
when connecting to a malicious server.

Background
==========

LibVNCServer/LibVNCClient are cross-platform C libraries that allow you
to easily implement VNC server or client functionality in your program.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-libs/libvncserver        < 0.9.11                  >= 0.9.11

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

Multiple vulnerabilities have been discovered in LibVNCServer and
LibVNCClient. Please review the CVE identifiers referenced below for
details.

Impact
======

A remote attacker could entice a user to connect to a malicious VNC
server or leverage Man-in-the-Middle attacks to cause the execution of
arbitrary code with the privileges of the user running a VNC client
linked against LibVNCClient.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All LibVNCServer/LibVNCClient users should upgrade to the latest
version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-libs/libvncserver-0.9.11"

References
==========

[ 1 ] CVE-2016-9941
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-9941
[ 2 ] CVE-2016-9942
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-9942

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

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

 https://security.gentoo.org/glsa/201702-24

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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