A docker.io security update has been released for Debian GNU/Linux 10 to address an issue where an attacker with the CAP_NET_RAW capability in a container to spoof router advertisements, resulting in information disclosure or denial of service.

DSA 4716-1: docker.io security update

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Debian Security Advisory DSA-4716-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
July 02, 2020   https://www.debian.org/security/faq
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Package : docker.io
CVE ID : CVE-2020-13401
Debian Bug : 962141

Etienne Champetier discovered that Docker, a Linux container runtime,
created network bridges which by default accept IPv6 router advertisements.
This could allow an attacker with the CAP_NET_RAW capability in a
container to spoof router advertisements, resulting in information
disclosure or denial of service.

For the stable distribution (buster), this problem has been fixed in
version 18.09.1+dfsg1-7.1+deb10u2.

We recommend that you upgrade your docker.io packages.

For the detailed security status of docker.io please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/docker.io

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/