title: The lxc-user-nic component of LXC allows unprivileged users to open arbitrary files
description: 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.
problem types: Incorrect access control
affected:
{
product: LXC
vendor: n/a
versions:
lessThan: 2.0*, status: affected, version: 2.0.9, versionType: custom
changes: [at: 3.0.2, status: unaffected], lessThan: 3.0*, status: affected, version: 3.0.0, versionType: custom
}