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Gentoo Linux Security Advisory 202004-06

Gentoo Linux Security Advisory 202004-06
Posted Apr 3, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202004-6 - A regression in GnuTLS breaks the security guarantees of the DTLS protocol. Versions less than 3.6.13 are affected.

tags | advisory, protocol
systems | linux, gentoo
SHA-256 | 236f3008df549a560fcbb4731c07be1005968aecb4a0cf9ddb7cae3974d8ea98

Gentoo Linux Security Advisory 202004-06

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Gentoo Linux Security Advisory GLSA 202004-06
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https://security.gentoo.org/
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Severity: Normal
Title: GnuTLS: DTLS protocol regression
Date: April 02, 2020
Bugs: #715602
ID: 202004-06

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Synopsis
========

A regression in GnuTLS breaks the security guarantees of the DTLS
protocol.

Background
==========

GnuTLS is an Open Source implementation of the TLS and SSL protocols.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/gnutls < 3.6.13 >= 3.6.13

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

It was discovered that DTLS client did not contribute any randomness to
the DTLS negotiation.

Impact
======

Please review the referenced advisory for details.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GnuTLS users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/gnutls-3.6.13"

References
==========

[ 1 ] GNUTLS-SA-2020-03-31
https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31

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

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

https://security.gentoo.org/glsa/202004-06

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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