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Improper Check for Dropped Privileges Affecting qemu package, versions <1:5.2+dfsg-11+deb11u2

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
7.8 high
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SUSE
7 high
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Red Hat
7 high

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  • Snyk ID SNYK-DEBIAN11-QEMU-2374485
  • published 26 Jan 2022
  • disclosed 29 Aug 2022
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Introduced: 26 Jan 2022

CVE-2022-0358 Open this link in a new tab
CWE-273 Open this link in a new tab

How to fix?

Upgrade Debian:11 qemu to version 1:5.2+dfsg-11+deb11u2 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:11 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.