The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "libxen-4.4", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "libxen-4.4-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "libxen-dev", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "libxen-ocaml", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "libxen-ocaml-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "libxen-ocaml-dev", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "libxenstore3.0", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "libxenstore3.0-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-hypervisor-4.1-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-hypervisor-4.3-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-hypervisor-4.3-armhf", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-hypervisor-4.4-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-hypervisor-4.4-arm64", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-hypervisor-4.4-armhf", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-system-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-system-arm64", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-system-armhf", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-utils-4.4", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-utils-4.4-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xen-utils-common", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xenstore-utils", "binary_version": "4.4.2-0ubuntu0.14.04.9" }, { "binary_name": "xenstore-utils-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.9" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "libxen-4.6", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "libxen-4.6-dbgsym", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "libxen-dev", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "libxenstore3.0", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "libxenstore3.0-dbgsym", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.4-amd64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.4-arm64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.4-armhf", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.5-amd64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.5-arm64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.5-armhf", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.6-amd64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.6-arm64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-hypervisor-4.6-armhf", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-system-amd64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-system-arm64", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-system-armhf", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-utils-4.6", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-utils-4.6-dbgsym", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xen-utils-common", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xenstore-utils", "binary_version": "4.6.0-1ubuntu4.3" }, { "binary_name": "xenstore-utils-dbgsym", "binary_version": "4.6.0-1ubuntu4.3" } ] }