Improper Check for Dropped Privileges Affecting qemu package, versions <1:7.0+dfsg-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-DEBIAN13-QEMU-5694318
  • published26 Jan 2022
  • disclosed29 Aug 2022

Introduced: 26 Jan 2022

CVE-2022-0358  (opens in a new tab)
CWE-273  (opens in a new tab)

How to fix?

Upgrade Debian:13 qemu to version 1:7.0+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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.

CVSS Scores

version 3.1