Home / mailings [gentoo-announce] [ GLSA 202008-15 ] Docker: Information disclosure
Posted on 27 August 2020
Gentoo-announce- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202008-15
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: Docker: Information disclosure
Date: August 26, 2020
Bugs: #729208
ID: 202008-15
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
A flaw in Docker allowed possible information leakage.
Background
==========
Docker is the world=E2=80=99s leading software containerization =platform.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-emulation/docker < 19.03.12 >= 19.03.12
Description
===========
It was found that Docker created network bridges which by default
accept IPv6 router advertisements.
Impact
======
An attacker who gained access to a container with CAP_NET_RAW
capability may be able to to spoof router advertisements, resulting in
information disclosure or denial of service.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Docker users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/docker-19.03.12"
References
==========
[ 1 ] CVE-2020-13401
https://nvd.nist.gov/vuln/detail/CVE-2020-13401
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202008-15
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 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
--Apple-Mail=_EBDD0466-4C84-44C4-997C-5B4E6DA9002B
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename=signature.asc
Content-Type: application/pgp-signature;
name=signature.asc
Content-Description: Message signed with OpenPGP
