GHSA-2j9v-p4xj-cjw2 Lima: An arbitrary user in a QEMU VM could gain the root privilege in the VM via the guest agent socket

• Go github.com/lima-vm/lima/v2: < 2.1.3 → fixed in 2.1.3

Impact On an instance of Lima running with `qemu` driver, an arbitrary user in the VM could access `/run/lima-guestagent.sock` when the guest agent is enabled. This could result in running an arbitrary command with the root privileges in the VM (not on the host), as `lima-guestagent.sock` provides the tunneling service for an arbitrary address, including a Unix socket address for privileged daemons like D-Bus. This vulnerability is not exploitable on `vz` driver, as the guest agent uses vsocks instead of Unix sockets. Patches Patched in Lima v2.1.3 (8a45892378d22f40505c31a38f786a07701b6d50) > [!NOTE] > The default user account in the VM can still run an arbitrary command as the root via the guest agent socket. > This is not a vulnerability, as the user can already run an arbitrary command with `sudo` by design. Workarounds • On macOS hosts, use `vz` driver instead of `qemu` (`limactl create --vm-type=vz`. Default since v1.0.) • Or, disable the guest agent (`limactl create --plain`)