libcontainer/user/user.go in runC before 0.1.0, as used in Docker before 1.11.2, improperly treats a numeric UID as a potential username, which allows local users to gain privileges via a numeric username in the password file in a container.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.0.0~rc2+docker1.12.6-0ubuntu1~16.04.1", "binary_name": "golang-github-opencontainers-runc-dev" }, { "binary_version": "1.0.0~rc2+docker1.12.6-0ubuntu1~16.04.1", "binary_name": "runc" }, { "binary_version": "1.0.0~rc2+docker1.12.6-0ubuntu1~16.04.1", "binary_name": "runc-dbgsym" } ] }