Описание
A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | code not present |
| devel | released | 1:6.2+dfsg-2ubuntu8 |
| esm-infra-legacy/trusty | not-affected | code not present |
| esm-infra/bionic | not-affected | code not present |
| esm-infra/focal | not-affected | code not present |
| esm-infra/xenial | not-affected | code not present |
| focal | not-affected | code not present |
| impish | released | 1:6.0+dfsg-2expubuntu1.2 |
| jammy | released | 1:6.2+dfsg-2ubuntu6.2 |
| trusty | ignored | end of standard support |
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EPSS
7.8 High
CVSS3
Связанные уязвимости
A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system.
A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system.
A flaw was found in the QEMU virtio-fs shared file system daemon (virt ...
EPSS
7.8 High
CVSS3