Description
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.
Published: 2022-08-29
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-5133-1 qemu security update
EUVD EUVD EUVD-2022-15514 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.
Ubuntu USN Ubuntu USN USN-5307-1 QEMU vulnerabilities
Ubuntu USN Ubuntu USN USN-5489-1 QEMU vulnerabilities
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Qemu Qemu
Redhat Advanced Virtualization Enterprise Linux Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-02T23:25:40.534Z

Reserved: 2022-01-25T00:00:00.000Z

Link: CVE-2022-0358

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-08-29T15:15:09.310

Modified: 2024-11-21T06:38:27.123

Link: CVE-2022-0358

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-01-25T00:00:00Z

Links: CVE-2022-0358 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses