This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--KrBixRTcMJHIKixori8CbC4NC3NdIMWDe
Content-Type: multipart/mixed;
 boundary="tOaEJXPZAfyFMTqb7A4Got5rBCy0ZOQEy";
 protected-headers="v1"
From: Thomas Deutschmann <whissi@gentoo.org>
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
Message-ID: <b0d903b4-783e-4717-3b8e-4908d08e4c35@gentoo.org>
Subject: [ GLSA 201811-03 ] OpenSSL: Denial of Service

--tOaEJXPZAfyFMTqb7A4Got5rBCy0ZOQEy
Content-Type: text/plain; charset=utf-8
Content-Language: en-U
Content-Transfer-Encoding: quoted-printable

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 201811-03
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                           https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: Normal
    Title: OpenSSL: Denial of Service
     Date: November 09, 2018
     Bugs: #663654
       ID: 201811-03

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

Synopsis
========

A vulnerability in OpenSSL might allow remote attackers to cause a
Denial of Service condition.

Background
==========

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer
(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general
purpose cryptography library.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/openssl           < 1.0.2o-r6              >= 1.0.2o-r6

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

It was discovered that OpenSSL allow malicious servers to send very
large primes to a client during DH(E) based TLS handshakes.

Impact
======

A remote attacker, by sending large prime to client during DH(E) TLS
handshake, could possibly cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All OpenSSL users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.0.2o-r6"

References
==========

[ 1 ] CVE-2018-0732
      https://nvd.nist.gov/vuln/detail/CVE-2018-0732

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

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

 https://security.gentoo.org/glsa/201811-03

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 2018 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.

https://creativecommons.org/licenses/by-sa/2.5


--tOaEJXPZAfyFMTqb7A4Got5rBCy0ZOQEy--

--KrBixRTcMJHIKixori8CbC4NC3NdIMWDe
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=fdCT
-----END PGP SIGNATURE-----

--KrBixRTcMJHIKixori8CbC4NC3NdIMWDe--