CVE-2022-0358

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 29 Aug 2022, 00:00
Last modified:02 Aug 2024, 23:25

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.04% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Aug 2022, 00:00
Published
Vulnerability first disclosed
02 Aug 2024, 23:25
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.04%• Percentile: 11%

Techniques & Countermeasures

  • CWE-273•Improper Check for Dropped Privileges

    The product attempts to drop privileges but does not check or incorrectly checks to see if the drop succeeded.

Affected Systems

  • qemu•qemu

    < 6.2.0-7

  • redhat•enterprise_linux

    8.0

References (4)