CVE-2023-2861

Published Dec 6, 2023

Last updated 8 months ago

Overview

Description: A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.
Source: patrick@puiterwijk.org
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.1
Impact score: 5.2
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Severity: HIGH

Weaknesses

nvd@nist.gov: NVD-CWE-Other
patrick@puiterwijk.org: CWE-284

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A178AFEF-359C-427C-99C6-EC003039FF3B",
            "versionEndExcluding": "8.1.0"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References