CVE-2022-0358

2022-08-2915:15:09

CWE-273

[email protected]

web.nvd.nist.gov

225

cve-2022-0358

qemu

virtio-fs

shared file system

daemon

virtiofsd

security flaw

privilege escalation

nvd

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

0.4%

JSON

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.

Affected configurations

Vulners

NVD

Node

qemuqemuRange≤6.2.0

VendorProductVersionCPE
qemuqemu*cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
qemu	qemu	*	cpe:2.3:a:qemu:qemu::::::::

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "QEMU/virtiofsd",
    "versions": [
      {
        "version": "Fixed in qemu v6.2.0-7",
        "status": "affected"
      }
    ]
  }
]