Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 1:2.11+dfsg-1ubuntu7.12 |
| cosmic | released | 1:2.12+dfsg-3ubuntu8.6 |
| devel | not-affected | 1:3.1+dfsg-2ubuntu1 |
| esm-infra-legacy/trusty | not-affected | code not present |
| esm-infra/bionic | not-affected | 1:2.11+dfsg-1ubuntu7.12 |
| esm-infra/xenial | not-affected | code not present |
| precise/esm | DNE | |
| trusty | not-affected | code not present |
| trusty/esm | not-affected | code not present |
| upstream | needs-triage |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | DNE | |
| cosmic | DNE | |
| devel | DNE | |
| esm-infra-legacy/trusty | DNE | |
| precise/esm | not-affected | code not present |
| trusty | DNE | |
| trusty/esm | DNE | |
| upstream | needs-triage | |
| xenial | DNE |
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3.5 Low
CVSS2
5.3 Medium
CVSS3
Связанные уязвимости
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.
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.
A flaw was found in qemu Media Transfer Protocol (MTP). The code openi ...
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.
Уязвимость реализации протокола qemu Media Transfer Protocol эмулятора аппаратного обеспечения QEMU, позволяющая нарушителю получить несанкционированный доступ к информации
3.5 Low
CVSS2
5.3 Medium
CVSS3