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Gentoo Linux Security Advisory                           GLSA 202107-23
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Docker: Multiple vulnerabilities
     Date: July 10, 2021
     Bugs: #768612
       ID: 202107-23

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Synopsis
========

Multiple vulnerabilities have been found in Docker, the worst of which
could result in privilege escalation to root on the host.

Background
==========

Docker is the world's leading software containerization platform.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-emulation/docker        < 20.10.3                >= 19.03.15 
                                                           >= 20.10.3 

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

Multiple vulnerabilities have been discovered in Docker. Please review
the CVE identifiers referenced below for details.

Impact
======

Please review the referenced CVE identifiers for details.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Docker 19.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-emulation/docker-19.03.15"

All Docker 20.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-emulation/docker-20.10.3"

References
==========

[ 1 ] CVE-2021-21284
      https://nvd.nist.gov/vuln/detail/CVE-2021-21284
[ 2 ] CVE-2021-21285
      https://nvd.nist.gov/vuln/detail/CVE-2021-21285

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

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

 https://security.gentoo.org/glsa/202107-23

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 2021 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