1. Ubuntu Security Notices
  2. USN-4589-2

USN-4589-2: Docker vulnerability

Publication date

15 October 2020

Overview

Docker could be made to expose sensitive information over the network.

Releases

Packages

Details

USN-4589-1 fixed a vulnerability in containerd. This update provides
the corresponding update for docker.io.

Original advisory details:

It was discovered that containerd could be made to expose sensitive
information when processing URLs in container image manifests. A
remote attacker could use this to trick the user and obtain the
user’s registry credentials.

USN-4589-1 fixed a vulnerability in containerd. This update provides
the corresponding update for docker.io.

Original advisory details:

It was discovered that containerd could be made to expose sensitive
information when processing URLs in container image manifests. A
remote attacker could use this to trick the user and obtain the
user’s registry credentials.

Update instructions

After a standard system update you need to restart docker to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal docker.io –  19.03.8-0ubuntu1.20.04.1
18.04 bionic docker.io –  19.03.6-0ubuntu1~18.04.2
16.04 xenial docker.io –  18.09.7-0ubuntu1~16.04.6

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References

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