From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (unknown [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id EF4011381FA for ; Sun, 18 May 2014 11:53:49 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id F0038E0DBA; Sun, 18 May 2014 11:51:44 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id A4A31E0D65 for ; Sun, 18 May 2014 11:51:08 +0000 (UTC) Received: from [192.168.0.197] (unknown [72.95.30.31]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: ackle) by smtp.gentoo.org (Postfix) with ESMTPSA id 8281433FDC7 for ; Sun, 18 May 2014 11:51:07 +0000 (UTC) Message-ID: <53789EA6.3050803@gentoo.org> Date: Sun, 18 May 2014 07:51:02 -0400 From: Sean Amoss User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-announce@lists.gentoo.org MIME-Version: 1.0 To: gentoo-announce@gentoo.org Subject: [gentoo-announce] [ GLSA 201405-16 ] Mono: Denial of Service X-Enigmail-Version: 1.6 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="3QqL7ExN6WX3qS6CtRK21fud8hhDKEtHi" X-Archives-Salt: 54af7f3c-6486-4e99-98c9-e4f89ae8aa3e X-Archives-Hash: 4ac1c8f2eb9b95b23bdae57129f01332 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --3QqL7ExN6WX3qS6CtRK21fud8hhDKEtHi Content-Type: multipart/alternative; boundary="------------060906050301080105030805" This is a multi-part message in MIME format. --------------060906050301080105030805 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201405-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Mono: Denial of Service Date: May 18, 2014 Bugs: #433768 ID: 201405-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis =3D=3D=3D=3D=3D=3D=3D=3D A hash collision vulnerability in Mono allows remote attackers to cause a Denial of Service condition. Background =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Mono is an open source implementation of Microsoft's .NET Framework. Affected packages =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-lang/mono < 2.10.9-r2 >=3D 2.10.9-r2=20 Description =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Mono does not properly randomize hash functions for form posts to protect against hash collision attacks. Impact =3D=3D=3D=3D=3D=3D A remote attacker could send specially crafted parameters, possibly resulting in 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 Mono users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=3Ddev-lang/mono-2.10.9-r2" References =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 1 ] CVE-2012-3543 http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-2012-3543 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: http://security.gentoo.org/glsa/glsa-201405-16.xml 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 security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License =3D=3D=3D=3D=3D=3D=3D Copyright 2014 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 --------------060906050301080105030805 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 
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Gentoo Linux Security Advisory                           GLSA 201405-16
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: Mono: Denial of Service
     Date: May 18, 2014
     Bugs: #433768
       ID: 201405-16

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

A hash collision vulnerability in Mono allows remote attackers to cause
a Denial of Service condition.

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

Mono is an open source implementation of Microsoft's .NET Framework.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-lang/mono              < 2.10.9-r2              >=3D 2.10.=
9-r2=20

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

Mono does not properly randomize hash functions for form posts to
protect against hash collision attacks.

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

A remote attacker could send specially crafted parameters, possibly
resulting in 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 Mono users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=3Ddev-lang/mono-2.10.9-r2"

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

[ 1 ] CVE-2012-3543
      http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20=
12-3543

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:

 http://security.gentoo.org/glsa/glsa-201405-16.xml=


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
security@gentoo.org or alternatively, you may file a bug at
https=
://bugs.gentoo.org.

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

Copyright 2014 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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