Sicherheit: Ausführen beliebiger Kommandos in dpkg

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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Message-ID: <c350f824-5f6f-6cb4-4ab1-acf1ee2faf96@gentoo.org>
Subject: [ GLSA 201612-07 ] dpkg: Arbitrary code execution

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Gentoo Linux Security Advisory GLSA 201612-07
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https://security.gentoo.org/
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Severity: Normal
Title: dpkg: Arbitrary code execution
Date: December 04, 2016
Bugs: #567258
ID: 201612-07

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Synopsis
========

A vulnerability was discovered in dpkg which could potentially lead to
arbitrary code execution.

Background
==========

Debian package management system.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/dpkg < 1.17.26 >= 1.17.26

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

Gentoo Linux developer, Hanno BÃ¶ck, discovered an off-by-one error in
the dpkg-deb component of dpkg, the Debian package management system,
which triggers a stack-based buffer overflow.

Impact
======

An attacker could potentially execute arbitrary code if an user or an
automated system were tricked into processing a specially crafted
Debian binary package (.deb).

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All dpkg users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/dpkg-1.17.26"

References
==========

[ 1 ] CVE-2015-7805
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7805

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

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

https://security.gentoo.org/glsa/201612-07

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 201612-07
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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: Normal
Title: dpkg: Arbitrary code execution
Date: December 04, 2016
Bugs: #567258
ID: 201612-07

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

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

A vulnerability was discovered in dpkg which could potentially lead to
arbitrary code execution.

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

Debian package management system.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/dpkg < 1.17.26 >=3D
1.1=
7.26=20

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

Gentoo Linux developer, Hanno B=C3=B6ck, discovered an off-by-one error i=
n
the dpkg-deb component of dpkg, the Debian package management system,
which triggers a stack-based buffer overflow.

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

An attacker could potentially execute arbitrary code if an user or an
automated system were tricked into processing a specially crafted
Debian binary package (.deb).

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 dpkg users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=3Dapp-arch/dpkg-1.17.26"

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

[ 1 ] CVE-2015-7805
<a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.=
cfm?cvename=3DCVE-2015-7805">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20=
15-7805</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/201612-07">https://security.gentoo.org/glsa/201612-07</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>
</html>

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