lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "lxc": "1.0.10-0ubuntu1.1", "python3-lxc": "1.0.10-0ubuntu1.1", "lxc-dbgsym": "1.0.10-0ubuntu1.1", "liblxc1": "1.0.10-0ubuntu1.1", "python3-lxc-dbgsym": "1.0.10-0ubuntu1.1", "lxc-dev": "1.0.10-0ubuntu1.1", "liblxc1-dbgsym": "1.0.10-0ubuntu1.1", "lxc-tests": "1.0.10-0ubuntu1.1", "lxc-templates-dbgsym": "1.0.10-0ubuntu1.1", "lxc-templates": "1.0.10-0ubuntu1.1", "lxc-dbg": "1.0.10-0ubuntu1.1", "lxc-tests-dbgsym": "1.0.10-0ubuntu1.1", "lxc-dev-dbgsym": "1.0.10-0ubuntu1.1" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "lxc-common": "2.0.8-0ubuntu1~16.04.2", "python3-lxc": "2.0.8-0ubuntu1~16.04.2", "liblxc1": "2.0.8-0ubuntu1~16.04.2", "lua-lxc": "2.0.8-0ubuntu1~16.04.2", "lxc1": "2.0.8-0ubuntu1~16.04.2", "lxc1-dbgsym": "2.0.8-0ubuntu1~16.04.2", "lxc": "2.0.8-0ubuntu1~16.04.2", "lxc-dev": "2.0.8-0ubuntu1~16.04.2", "lxc-common-dbgsym": "2.0.8-0ubuntu1~16.04.2", "lua-lxc-dbgsym": "2.0.8-0ubuntu1~16.04.2", "lxc-templates-dbgsym": "2.0.8-0ubuntu1~16.04.2", "lxc-tests": "2.0.8-0ubuntu1~16.04.2", "lxc-templates": "2.0.8-0ubuntu1~16.04.2", "lxc-tests-dbgsym": "2.0.8-0ubuntu1~16.04.2", "liblxc1-dbgsym": "2.0.8-0ubuntu1~16.04.2" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "liblxc1-dbgsym": "3.0.1-0ubuntu1~18.04.2", "libpam-cgfs": "3.0.1-0ubuntu1~18.04.2", "liblxc1": "3.0.1-0ubuntu1~18.04.2", "lxc-dev": "3.0.1-0ubuntu1~18.04.2", "lxc-utils": "3.0.1-0ubuntu1~18.04.2", "lxc-utils-dbgsym": "3.0.1-0ubuntu1~18.04.2", "liblxc-dev": "3.0.1-0ubuntu1~18.04.2", "libpam-cgfs-dbgsym": "3.0.1-0ubuntu1~18.04.2", "lxc1": "3.0.1-0ubuntu1~18.04.2", "liblxc-common": "3.0.1-0ubuntu1~18.04.2", "liblxc-common-dbgsym": "3.0.1-0ubuntu1~18.04.2", "lxc": "3.0.1-0ubuntu1~18.04.2" } ] }