runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.
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{ "binaries": [ { "binary_version": "18.06.1-0ubuntu1.2~18.04.1", "binary_name": "docker.io" }, { "binary_version": "18.06.1-0ubuntu1.2~18.04.1", "binary_name": "golang-docker-dev" }, { "binary_version": "18.06.1-0ubuntu1.2~18.04.1", "binary_name": "golang-github-docker-docker-dev" }, { "binary_version": "18.06.1-0ubuntu1.2~18.04.1", "binary_name": "vim-syntax-docker" } ], "availability": "No subscription required" }