A flaw was found in qemu Media Transfer Protocol (MTP). The code opening files in usb_mtp_get_object and usb_mtp_get_partial_object and directories in usb_mtp_object_readdir doesn't consider that the underlying filesystem may have changed since the time lstat(2) was called in usb_mtp_object_alloc, a classical TOCTTOU problem. An attacker with write access to the host filesystem shared with a guest can use this property to navigate the host filesystem in the context of the QEMU process and read any file the QEMU process has access to. Access to the filesystem may be local or via a network share protocol such as CIFS.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)
- CVSS 3.0 Base Score: 5
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade qemu | Mar 12, 2019 | Dec 13, 2018 |
| Huawei Euleros 2_0_sp8 | — | Upgrade qemu-imgUpgrade qemu-kvmUpgrade qemu-block-glusterUpgrade qemu-block-nfsUpgrade qemu-system-aarch64Upgrade qemu-ui-sdlUpgrade qemu-ui-cursesUpgrade qemu-audio-sdlUpgrade qemu-commonUpgrade qemu-block-dmgUpgrade qemu-block-rbdUpgrade qemu-system-aarch64-coreUpgrade qemu-block-sshUpgrade qemu-ui-gtkUpgrade qemu-audio-paUpgrade qemu-block-iscsiUpgrade qemu-block-curlUpgrade qemu-audio-ossUpgrade qemu-audio-alsa | Aug 28, 2019 | Dec 13, 2018 |
| Oracle_linux | — | Upgrade qemu-system-aarch64-coreUpgrade qemu-system-x86Upgrade qemu-block-iscsiUpgrade qemu-imgUpgrade ivshmem-toolsUpgrade qemu-block-glusterUpgrade qemu-commonUpgrade qemu-system-aarch64Upgrade qemu-system-x86-coreUpgrade qemu-kvm-coreUpgrade qemu-block-rbdUpgrade qemuUpgrade qemu-kvm | May 15, 2019 | Dec 13, 2018 |
| Suse | — | Upgrade qemu-hw-display-qxlUpgrade qemu-block-dmgUpgrade qemu-chardev-spiceUpgrade qemu-ui-openglUpgrade qemu-linux-userUpgrade qemu-audio-paUpgrade qemu-ui-spice-coreUpgrade qemu-hw-usb-redirectUpgrade qemu-testsuiteUpgrade qemu-audio-ossUpgrade qemu-seabiosUpgrade qemu-audio-alsaUpgrade qemu-block-glusterUpgrade qemu-skibootUpgrade qemu-ui-cursesUpgrade qemu-hw-display-virtio-vgaUpgrade qemu-ui-spice-appUpgrade qemu-ksmUpgrade qemu-armUpgrade qemu-block-iscsiUpgrade qemu-x86Upgrade qemu-microvmUpgrade qemu-ppcUpgrade qemu-s390xUpgrade qemuUpgrade qemu-chardev-baumUpgrade qemu-block-curlUpgrade qemu-vgabiosUpgrade qemu-toolsUpgrade qemu-kvmUpgrade qemu-extraUpgrade qemu-ipxeUpgrade qemu-guest-agentUpgrade qemu-s390Upgrade qemu-block-rbdUpgrade qemu-langUpgrade qemu-hw-display-virtio-gpu-pciUpgrade qemu-ui-gtkUpgrade qemu-hw-s390x-virtio-gpu-ccwUpgrade qemu-hw-display-virtio-gpuUpgrade qemu-sgabiosUpgrade qemu-block-sshUpgrade qemu-audio-spice | Feb 20, 2019 | Dec 13, 2018 |
| Ubuntu | — | Upgrade qemu-system-guiUpgrade qemu-system-mipsUpgrade qemu-system-aarch64Upgrade qemu-system-sparcUpgrade qemu-system-miscUpgrade qemu-systemUpgrade qemu-system-ppcUpgrade qemu-system-x86Upgrade qemu-system-dataUpgrade qemu-system-armUpgrade qemu-system-s390x | Apr 3, 2019 | Dec 13, 2018 |
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