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-audio-sdlUpgrade qemu-block-glusterUpgrade qemu-commonUpgrade qemu-ui-cursesUpgrade qemu-kvmUpgrade qemu-block-nfsUpgrade qemu-system-aarch64Upgrade qemu-imgUpgrade qemu-ui-sdlUpgrade qemu-block-sshUpgrade qemu-block-dmgUpgrade qemu-block-iscsiUpgrade qemu-system-aarch64-coreUpgrade qemu-audio-paUpgrade qemu-block-curlUpgrade qemu-audio-ossUpgrade qemu-block-rbdUpgrade qemu-audio-alsaUpgrade qemu-ui-gtk | Aug 28, 2019 | Dec 13, 2018 |
| Oracle_linux | — | Upgrade ivshmem-toolsUpgrade qemu-system-aarch64-coreUpgrade qemu-block-glusterUpgrade qemu-block-iscsiUpgrade qemu-imgUpgrade qemu-system-x86Upgrade qemu-commonUpgrade qemuUpgrade qemu-system-x86-coreUpgrade qemu-block-rbdUpgrade qemu-kvm-coreUpgrade qemu-kvmUpgrade qemu-system-aarch64 | May 15, 2019 | Dec 13, 2018 |
| Suse | — | Upgrade qemu-microvmUpgrade qemu-hw-display-virtio-gpuUpgrade qemu-hw-display-virtio-gpu-pciUpgrade qemu-block-curlUpgrade qemu-guest-agentUpgrade qemu-block-sshUpgrade qemu-ui-gtkUpgrade qemu-hw-s390x-virtio-gpu-ccwUpgrade qemu-ipxeUpgrade qemuUpgrade qemu-sgabiosUpgrade qemu-chardev-baumUpgrade qemu-kvmUpgrade qemu-toolsUpgrade qemu-extraUpgrade qemu-audio-spiceUpgrade qemu-vgabiosUpgrade qemu-s390Upgrade qemu-s390xUpgrade qemu-block-rbdUpgrade qemu-x86Upgrade qemu-langUpgrade qemu-ppcUpgrade qemu-block-glusterUpgrade qemu-testsuiteUpgrade qemu-ksmUpgrade qemu-ui-cursesUpgrade qemu-armUpgrade qemu-hw-display-virtio-vgaUpgrade qemu-linux-userUpgrade qemu-block-dmgUpgrade qemu-hw-display-qxlUpgrade qemu-block-iscsiUpgrade qemu-skibootUpgrade qemu-chardev-spiceUpgrade qemu-ui-openglUpgrade qemu-audio-ossUpgrade qemu-audio-paUpgrade qemu-seabiosUpgrade qemu-audio-alsaUpgrade qemu-hw-usb-redirectUpgrade qemu-ui-spice-coreUpgrade qemu-ui-spice-app | Feb 20, 2019 | Dec 13, 2018 |
| Ubuntu | — | Upgrade qemu-system-s390xUpgrade qemu-system-armUpgrade qemu-systemUpgrade qemu-system-miscUpgrade qemu-system-guiUpgrade qemu-system-mipsUpgrade qemu-system-x86Upgrade qemu-system-ppcUpgrade qemu-system-sparcUpgrade qemu-system-dataUpgrade qemu-system-aarch64 | Apr 3, 2019 | Dec 13, 2018 |
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