The virConnectGetDomainCapabilities() libvirt API, versions 4.x.x before 4.10.1 and 5.x.x before 5.4.1, accepts an "emulatorbin" argument to specify the program providing emulation for a domain. Since v1.2.19, libvirt will execute that program to probe the domain's capabilities. Read-only clients could specify an arbitrary path for this argument, causing libvirtd to execute a crafted executable with its own privileges.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libvirt-doc": "1.3.1-1ubuntu10.27", "libvirt0-dbgsym": "1.3.1-1ubuntu10.27", "libvirt-dev-dbgsym": "1.3.1-1ubuntu10.27", "libvirt-dev": "1.3.1-1ubuntu10.27", "libvirt-bin-dbgsym": "1.3.1-1ubuntu10.27", "libvirt0": "1.3.1-1ubuntu10.27", "libvirt0-dbg": "1.3.1-1ubuntu10.27", "libvirt-bin": "1.3.1-1ubuntu10.27" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libvirt-daemon-driver-storage-gluster-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-wireshark-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-daemon-driver-storage-rbd": "4.0.0-1ubuntu8.12", "libvirt-clients-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-daemon-driver-storage-sheepdog": "4.0.0-1ubuntu8.12", "libvirt-sanlock": "4.0.0-1ubuntu8.12", "libvirt-doc": "4.0.0-1ubuntu8.12", "libvirt-daemon-system-dbgsym": "4.0.0-1ubuntu8.12", "libvirt0-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-dev": "4.0.0-1ubuntu8.12", "libvirt-daemon-driver-storage-rbd-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-clients": "4.0.0-1ubuntu8.12", "libvirt0": "4.0.0-1ubuntu8.12", "libvirt-daemon-driver-storage-zfs": "4.0.0-1ubuntu8.12", "libvirt-daemon-system": "4.0.0-1ubuntu8.12", "libvirt-sanlock-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-wireshark": "4.0.0-1ubuntu8.12", "libnss-libvirt-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-daemon-driver-storage-zfs-dbgsym": "4.0.0-1ubuntu8.12", "libnss-libvirt": "4.0.0-1ubuntu8.12", "libvirt-daemon-driver-storage-sheepdog-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-daemon-dbgsym": "4.0.0-1ubuntu8.12", "libvirt-daemon-driver-storage-gluster": "4.0.0-1ubuntu8.12", "libvirt-daemon": "4.0.0-1ubuntu8.12", "libvirt-bin": "4.0.0-1ubuntu8.12" } ] }