GLSA 202008-15: Docker: Information disclosure

Severity:normal
Title:Docker: Information disclosure
Date:08/26/2020
Bugs: #729208
ID:202008-15

Synopsis

A flaw in Docker allowed possible information leakage.

Background

Docker is the world’s leading software containerization platform.

Affected packages

Package Vulnerable Unaffected Architecture(s)
app-emulation/docker < 19.03.12 >= 19.03.12 All supported architectures

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

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202008-15.xml

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 2010 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.

Thank you!