Sicherheit: Ausführen beliebiger Kommandos in quagga

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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Message-ID: <044e0ea1-2dfa-71cc-eab1-82c7f45c350f@gentoo.org>
Subject: [ GLSA 201610-03 ] Quagga: Arbitrary code execution

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Gentoo Linux Security Advisory GLSA 201610-03
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https://security.gentoo.org/
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Severity: High
Title: Quagga: Arbitrary code execution
Date: October 10, 2016
Bugs: #577156
ID: 201610-03

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Synopsis
========

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

Background
==========

Quagga is a free routing daemon replacing Zebra supporting RIP, OSPF
and BGP.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/quagga < 1.0.20160315 >= 1.0.20160315

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

A memcpy function in the VPNv4 NLRI parser of bgp_mplsvpn.c does not
properly check the upper-bound length of received Labeled-VPN SAFI
routes data, which may allow for arbitrary code execution on the stack.

Impact
======

A remote attacker could send a specially crafted packet, possibly
resulting in execution of arbitrary code with the privileges of the
process or a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Quagga users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=net-misc/quagga-1.0.20160315"

References
==========

[ 1 ] CVE-2016-2342
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2342

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

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

https://security.gentoo.org/glsa/201610-03

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=3D"color: rgb(0, 0, 0); font-style: normal;
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Gentoo Linux Security Advisory GLSA 201610-03
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<a
class=3D"moz-txt-link-freet=
ext" href=3D"https://security.gentoo.org/">https://security.gentoo.org/</=
a>
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Severity: High
Title: Quagga: Arbitrary code execution
Date: October 10, 2016
Bugs: #577156
ID: 201610-03

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
=3D=3D=3D=3D=3D=3D=3D=3D

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

Background
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Quagga is a free routing daemon replacing Zebra supporting RIP, OSPF
and BGP.

Affected packages
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/quagga < 1.0.20160315 >=3D
1.0.2016=
0315=20

Description
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

A memcpy function in the VPNv4 NLRI parser of bgp_mplsvpn.c does not
properly check the upper-bound length of received Labeled-VPN SAFI
routes data, which may allow for arbitrary code execution on the stack.

Impact
=3D=3D=3D=3D=3D=3D

A remote attacker could send a specially crafted packet, possibly
resulting in execution of arbitrary code with the privileges of the
process or a Denial of Service condition.

Workaround
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

There is no known workaround at this time.

Resolution
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

All Quagga users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=3Dnet-misc/quagga-1.0.20160315=
"

References
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

[ 1 ] CVE-2016-2342
<a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.=
cfm?cvename=3DCVE-2016-2342">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20=
16-2342</a>

Availability
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

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

<a class=3D"moz-txt-link-freetext" href=3D"https://security.gentoo.org/g=
lsa/201610-03">https://security.gentoo.org/glsa/201610-03</a>

Concerns?
=3D=3D=3D=3D=3D=3D=3D=3D=3D

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=3D"moz-txt-link-abbreviated"
href=3D"mailto:security@gentoo.org"=
>security@gentoo.org</a> or alternatively, you may file a bug at
<a class=3D"moz-txt-link-freetext" href=3D"https://bugs.gentoo.org">https=
://bugs.gentoo.org</a>.

License
=3D=3D=3D=3D=3D=3D=3D

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=3D"moz-txt-link-freetext" href=3D"http://creativecommons.org/lic=
enses/by-sa/2.5">http://creativecommons.org/licenses/by-sa/2.5</a></pre>
</body>
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