Home / mailings [gentoo-announce] [ GLSA 201612-36 ] TigerVNC: Integer overflow
Posted on 13 December 2016
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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
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Subject: [ GLSA 201612-36 ] TigerVNC: Integer overflow
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Gentoo Linux Security Advisory GLSA 201612-36
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https://security.gentoo.org/
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Severity: Normal
Title: TigerVNC: Integer overflow
Date: December 13, 2016
Bugs: #534714
ID: 201612-36
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Synopsis
========
An integer 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 < 1.4.2 >= 1.4.2
Description
===========
TigerVNC is impacted by the same vulnerability as found in
CVE-2014-6051. An integer overflow, leading to a heap-based buffer
overflow, was found in the way screen sizes were handled.
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-1.4.2"
References
==========
[ 1 ] CVE-2014-6051
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6051
[ 2 ] CVE-2014-8240
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-8240
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201612-36
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 2016 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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<pre style="color: rgb(0, 0, 0); font-style: normal; font-variant-l=igatures: normal; font-variant-caps: normal; font-weight: normal; letter-=spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-tr=ansform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0=px; word-wrap: break-word; white-space: pre-wrap;">- - - - - - - - - - - =- - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201612-36
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<a class="moz-txt-link-freet=ext" href="https://security.gentoo.org/">https://security.gentoo.org/</=a>
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Severity: Normal
Title: TigerVNC: Integer overflow
Date: December 13, 2016
Bugs: #534714
ID: 201612-36
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
An integer 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 < 1.4.2 >= 1==2E4.2
Description
===========
TigerVNC is impacted by the same vulnerability as found in
CVE-2014-6051. An integer overflow, leading to a heap-based buffer
overflow, was found in the way screen sizes were handled.
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-1.4.2"
References
==========
[ 1 ] CVE-2014-6051
<a class="moz-txt-link-freetext" href="http://nvd.nist.gov/nvd.=cfm?cvename=CVE-2014-6051">http://nvd.nist.gov/nvd.cfm?cvename=CVE-20=14-6051</a>
[ 2 ] CVE-2014-8240
<a class="moz-txt-link-freetext" href="http://nvd.nist.gov/nvd.=cfm?cvename=CVE-2014-8240">http://nvd.nist.gov/nvd.cfm?cvename=CVE-20=14-8240</a>
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
<a class="moz-txt-link-freetext" href="https://security.gentoo.org/g=lsa/201612-36">https://security.gentoo.org/glsa/201612-36</a>
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
<a class="moz-txt-link-abbreviated" href="mailto:security@gentoo.org"=>security@gentoo.org</a> or alternatively, you may file a bug at
<a class="moz-txt-link-freetext" href="https://bugs.gentoo.org">https=://bugs.gentoo.org</a>.
License
=======
Copyright 2016 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.
<a class="moz-txt-link-freetext" href="http://creativecommons.org/lic=enses/by-sa/2.5">http://creativecommons.org/licenses/by-sa/2.5</a></pre>
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