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Gentoo Linux Security Advisory GLSA 202012-13
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https://security.gentoo.org/
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Severity: Low
Title: OpenSSL: Denial of service
Date: December 23, 2020
Bugs: #759079
ID: 202012-13

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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/v1.1/v1.2/v1.3) as
well as a general purpose cryptography library.

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

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

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

A null pointer dereference flaw was found in OpenSSL.

Impact
======

A remote attacker, able to control the arguments of the
GENERAL_NAME_cmp function in an application linked against OpenSSL,
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-1.1.1i"

References
==========

[ 1 ] CVE-2020-1971
https://nvd.nist.gov/vuln/detail/CVE-2020-1971

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

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

https://security.gentoo.org/glsa/202012-13

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 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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