Sicherheit: Denial of Service in nghttp2

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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Message-ID: <2d9b810c-0237-2384-712b-3f2ca0994731@gentoo.org>
Subject: [ GLSA 201612-13 ] nghttp2: Denial of Service

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Gentoo Linux Security Advisory GLSA 201612-13
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https://security.gentoo.org/
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Severity: Normal
Title: nghttp2: Denial of Service
Date: December 05, 2016
Bugs: #574780
ID: 201612-13

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Synopsis
========

Nghttp2 is vulnerable to a Denial of Service attack.

Background
==========

Nghttp2 is an implementation of HTTP/2 and its header compression
algorithm HPACK in C.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/nghttp2 < 1.7.1 >= 1.7.1

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

Nghttpd, nghttp, and libnghttp2_asio applications do not limit the
memory usage for the incoming HTTP header field. If a peer sends a
specially crafted HTTP/2 HEADERS frame and CONTINUATION frame, they
will crash with an out of memory error.

Impact
======

A remote attacker could possibly cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All nghttp2 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/nghttp2-1.7.1"

References
==========

[ 1 ] CVE-2016-1544
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1544

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

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

https://security.gentoo.org/glsa/201612-13

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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Gentoo Linux Security Advisory GLSA 201612-13
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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: nghttp2: Denial of Service
Date: December 05, 2016
Bugs: #574780
ID: 201612-13

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

Nghttp2 is vulnerable to a Denial of Service attack.

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

Nghttp2 is an implementation of HTTP/2 and its header compression
algorithm HPACK in C.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/nghttp2 < 1.7.1 >=3D
1=
=2E7.1=20

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

Nghttpd, nghttp, and libnghttp2_asio applications do not limit the
memory usage for the incoming HTTP header field. If a peer sends a
specially crafted HTTP/2 HEADERS frame and CONTINUATION frame, they
will crash with an out of memory error.

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

A remote attacker could possibly cause 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 nghttp2 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=3Dnet-libs/nghttp2-1.7.1"

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

[ 1 ] CVE-2016-1544
<a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.=
cfm?cvename=3DCVE-2016-1544">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20=
16-1544</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/201612-13">https://security.gentoo.org/glsa/201612-13</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>
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