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Gentoo Linux Security Advisory                           GLSA 202004-10
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: OpenSSL: Multiple vulnerabilities
     Date: April 23, 2020
     Bugs: #702176, #717442
       ID: 202004-10

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Synopsis
========

Multiple vulnerabilities were found in OpenSSL, the worst of which
could 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/v1.1/v1.2/v1.3) as
well as a general purpose cryptography library.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/openssl             < 1.1.1g                  >= 1.1.1g

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

Multiple vulnerabilities have been discovered in OpenSSL. Please review
the CVE identifiers referenced below for details.

Impact
======

A remote attacker could perform a malicious crafted TLS 1.3 handshake
against an application using OpenSSL, possibly resulting in a Denial of
Service condition.

In addition, it's feasible that an attacker might attack DH512.

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-1.1.1g"

References
==========

[ 1 ] CVE-2019-1551
      https://nvd.nist.gov/vuln/detail/CVE-2019-1551
[ 2 ] CVE-2020-1967
      https://nvd.nist.gov/vuln/detail/CVE-2020-1967

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

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

 https://security.gentoo.org/glsa/202004-10

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 2020 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


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