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Gentoo Linux Security Advisory 202006-01

Gentoo Linux Security Advisory 202006-01
Posted Jun 9, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202006-1 - An information disclosure vulnerability in GnuTLS allow remote attackers to obtain sensitive information. Versions less than 3.6.14 are affected.

tags | advisory, remote, info disclosure
systems | linux, gentoo
advisories | CVE-2020-13777
SHA-256 | 323e146f2376f2d129a54e1b0cca63f0ea73eac997d0155096a35e454fe04324

Gentoo Linux Security Advisory 202006-01

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 202006-01
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https://security.gentoo.org/
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Severity: Normal
Title: GnuTLS: Information disclosure
Date: June 09, 2020
Bugs: #727108
ID: 202006-01

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Synopsis
========

An information disclosure vulnerability in GnuTLS allow remote
attackers to obtain sensitive information.

Background
==========

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

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/gnutls < 3.6.14 >= 3.6.14

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

A flaw was reported in the TLS session ticket key construction in
GnuTLS.

Impact
======

A remote attacker could recover previous conversations in TLS 1.2 and
obtain sensitive information or conduct a man-in-the-middle attack to
bypass authentication in TLS 1.3.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GnuTLS user should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/gnutls-3.6.14"

References
==========

[ 1 ] CVE-2020-13777
https://nvd.nist.gov/vuln/detail/CVE-2020-13777

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

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

https://security.gentoo.org/glsa/202006-01

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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