[ GLSA 202009-01 ] GnuTLS: Denial of service

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 202009-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                           https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: Low
    Title: GnuTLS: Denial of service
     Date: September 06, 2020
     Bugs: #740390
       ID: 202009-01

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

Synopsis
========

A flaw was found in GnuTLS, possibly allowing a Denial of Service
condition.

Background
==========

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

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-libs/gnutls              < 3.6.15                  >= 3.6.15

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

It was found that GnuTLS didn't handle "no_renegotiation" alert
properly.

Impact
======

A remote attacker could entice a user to connect to a malicious TLS
endpoint using an application linked against GnuTLS, possibly resulting
in a Denial of Service condition.

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-3.6.15"

References
==========

[ 1 ] CVE-2020-24659
      https://nvd.nist.gov/vuln/detail/CVE-2020-24659

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

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

 https://security.gentoo.org/glsa/202009-01

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
[email protected] 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

-----BEGIN PGP SIGNATURE-----

iQGSBAEBCgB9FiEEExKRzo+LDXJgXHuURObr3Jv2BVkFAl9ULEVfFIAAAAAALgAo
aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDEz
MTI5MUNFOEY4QjBENzI2MDVDN0I5NDQ0RTZFQkRDOUJGNjA1NTkACgkQRObr3Jv2
BVkExAf2Lqd7cQsex6Zr8aB0ouMRXiTY7pbj9TD9cPOuBcVejjBCoqbXliPJGCEK
v6O1rm5V32Nx0+RUSOrlbR4YhOl8MCoovGWWHATjQs6JRxy8j+kZpJPzZPChYfal
6D8LSk70cr4FheuBChlHCTKX81R361LyqVK2myy8z7+kXM/ycqCgTkYEFpjTknIa
2gOkBnnIxOpoeVXh4vWCGRBwvYMf96Ebs1rlo2xjaKgC1Un8cE6U8e0U4jEwuVEB
VVL/nmS5c3ht2F0Xyn19bgmzFb5qHz/+eeAnPwcZ+kHo9JHOOXh9KPW8MOCNk2/h
ZHPSlfkDf+eFdwDmhTLSptvEp8Iw
=QP/I
-----END PGP SIGNATURE-----