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Gentoo Linux Security Advisory 201702-19

Gentoo Linux Security Advisory 201702-19
Posted Feb 21, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201702-19 - A buffer overflow in TigerVNC might allow remote attackers to execute arbitrary code. Versions less than 1.7.1 are affected.

tags | advisory, remote, overflow, arbitrary
systems | linux, gentoo
advisories | CVE-2017-5581
SHA-256 | 4776de0b50ed850201bb802cf2a730ae52b8b35345fa0ed74beb83b9dada683b

Gentoo Linux Security Advisory 201702-19

Change Mirror Download

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Gentoo Linux Security Advisory GLSA 201702-19
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https://security.gentoo.org/
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Severity: Normal
Title: TigerVNC: Buffer overflow
Date: February 20, 2017
Bugs: #606998
ID: 201702-19

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Synopsis
========

A buffer overflow in TigerVNC might allow remote attackers to execute
arbitrary code.

Background
==========

TigerVNC is a high-performance VNC server/client.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/tigervnc < 1.7.1 >= 1.7.1

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

A buffer overflow vulnerability in ModifiablePixelBuffer::fillRect in
vncviewer was found.

Impact
======

A remote attacker, utilizing a malicious VNC server, could execute
arbitrary code with the privileges of the user running the client or
cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All TigerVNC users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/tigervnc-1.7.1"

References
==========

[ 1 ] CVE-2017-5581
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-5581

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

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

https://security.gentoo.org/glsa/201702-19

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


--d9TGoJEO4X1liA5EJxQxqM1gjInuR8SG2--

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