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Gentoo Linux Security Advisory GLSA 201710-15
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https://security.gentoo.org/
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Severity: Normal
Title: GnuTLS: Denial of Service
Date: October 15, 2017
Bugs: #622038
ID: 201710-15

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Synopsis
========

A null pointer dereference in GnuTLS might allow attackers to cause a
Denial of Service condition.

Background
==========

GnuTLS is a secure communications library implementing the SSL, TLS and
DTLS protocols and technologies around them.

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

——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 net-libs/gnutls < 3.5.13 >= 3.5.13

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

A null pointer dereference while decoding a status response TLS
extension with valid contents was discovered in GnuTLS.

Impact
======

A remote attacker could possibly cause 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-3.5.13”

Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying some of these
packages.

References
==========

[ 1 ] CVE-2017-7507
https://nvd.nist.gov/vuln/detail/CVE-2017-7507

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

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

https://security.gentoo.org/glsa/201710-15

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 2017 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.

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