CVE-2018-16872

2018-12-1321:00:00

CWE-367

redhat

www.cve.org

5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L

6 Medium

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

67.7%

JSON

A flaw was found in qemu Media Transfer Protocol (MTP). The code opening files in usb_mtp_get_object and usb_mtp_get_partial_object and directories in usb_mtp_object_readdir doesn’t consider that the underlying filesystem may have changed since the time lstat(2) was called in usb_mtp_object_alloc, a classical TOCTTOU problem. An attacker with write access to the host filesystem shared with a guest can use this property to navigate the host filesystem in the context of the QEMU process and read any file the QEMU process has access to. Access to the filesystem may be local or via a network share protocol such as CIFS.

CNA Affected

[
  {
    "product": "QEMU:",
    "vendor": "[UNKNOWN]",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]