Docker Engine before 1.8.3 and CS Docker Engine before 1.6.2-CS7 does not properly validate and extract the manifest object from its JSON representation during a pull, which allows attackers to inject new attributes in a JSON object and bypass pull-by-digest validation.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "1.10.3-0ubuntu6", "binary_name": "docker.io" }, { "binary_version": "1.10.3-0ubuntu6", "binary_name": "golang-docker-dev" }, { "binary_version": "1.10.3-0ubuntu6", "binary_name": "golang-github-docker-docker-dev" }, { "binary_version": "1.10.3-0ubuntu6", "binary_name": "vim-syntax-docker" } ] }