lxc-attach in LXC before 1.0.9 and 2.x before 2.0.6 allows an attacker inside of an unprivileged container to use an inherited file descriptor, of the host's /proc, to access the rest of the host's filesystem via the openat() family of syscalls.
{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "liblxc1",
            "binary_version": "1.0.8-0ubuntu0.4"
        },
        {
            "binary_name": "lxc",
            "binary_version": "1.0.8-0ubuntu0.4"
        },
        {
            "binary_name": "lxc-dev",
            "binary_version": "1.0.8-0ubuntu0.4"
        },
        {
            "binary_name": "lxc-templates",
            "binary_version": "1.0.8-0ubuntu0.4"
        },
        {
            "binary_name": "lxc-tests",
            "binary_version": "1.0.8-0ubuntu0.4"
        },
        {
            "binary_name": "python3-lxc",
            "binary_version": "1.0.8-0ubuntu0.4"
        }
    ]
}
          {
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "liblxc1",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "lua-lxc",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "lxc",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "lxc-common",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "lxc-dev",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "lxc-templates",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "lxc-tests",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "lxc1",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        },
        {
            "binary_name": "python3-lxc",
            "binary_version": "2.0.5-0ubuntu1~ubuntu16.04.3"
        }
    ]
}