docker.io: Access Confidential Data -- Remote with User Interaction

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3565
                     USN-4589-2: Docker vulnerability
                              16 October 2020

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           docker.io
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Access Confidential Data -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-15157  

Original Bulletin: 
   https://usn.ubuntu.com/4589-2/

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running docker.io check for an updated version of the software for 
         their operating system.

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USN-4589-2: Docker vulnerability
15 October 2020

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

  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Packages

  o docker.io - Linux container runtime

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.

Update instructions

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

Ubuntu 20.04

  o docker.io - 19.03.8-0ubuntu1.20.04.1

Ubuntu 18.04

  o docker.io - 19.03.6-0ubuntu1~18.04.2

Ubuntu 16.04

  o docker.io - 18.09.7-0ubuntu1~16.04.6

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

References

  o CVE-2020-15157

Related notices

  o USN-4589-1 : containerd

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