USN-4103-2: Docker vulnerability

Docker vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 19.04
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS

Summary

Docker could be made to crash or run programs as your login.

Software Description

docker.io – Linux container runtime

Details

Jasiel Spelman discovered that a double free existed in the docker-credential-
helpers dependency of Docker. A local attacker could use this to cause a denial of service
(crash) or possibly execute arbitrary code.

Original advisory details:

Jasiel Spelman discovered that a double free existed in docker-credential-
helpers. A local attacker could use this to cause a denial of service
(crash) or possibly execute arbitrary code.

Update instructions

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

Ubuntu 19.04: docker.io – 18.09.7-0ubuntu1~19.04.5
Ubuntu 18.04 LTS: docker.io – 18.09.7-0ubuntu1~18.04.4
Ubuntu 16.04 LTS: docker.io – 18.09.7-0ubuntu1~16.04.5

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References

Source: USN-4103-2: Docker vulnerability

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