Docker before 1.3.1 and docker-py before 0.5.3 fall back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_name": "docker.io", "binary_version": "1.6.2~dfsg1-1ubuntu4~14.04.1" }, { "binary_name": "golang-docker-dev", "binary_version": "1.6.2~dfsg1-1ubuntu4~14.04.1" }, { "binary_name": "vim-syntax-docker", "binary_version": "1.6.2~dfsg1-1ubuntu4~14.04.1" } ] }