What is CVE-2023-2861?

CVE-2023-2861 is a medium-severity vulnerability in Qemu, classified under Improper Access Control. CVSS score: 6.0/10. Published 2023-12-06.

How severe is CVE-2023-2861?

Medium severity. CVSS v3 base score is 6.0 out of 10.

Vulnerability in Qemu

CVE-2023-2861

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.

EPSS: 0.004 (30.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

Affected products

Qemu

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

patrick@puiterwijk.org (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
patrick@puiterwijk.org (x_refsource_REDHAT, issue-tracking, Patch, Issue Tracking)
patrick@puiterwijk.org
patrick@puiterwijk.org
patrick@puiterwijk.org

Frequently asked questions

What is CVE-2023-2861?: CVE-2023-2861 is a medium-severity vulnerability in Qemu, classified under Improper Access Control. CVSS score: 6.0/10. Published 2023-12-06.
How severe is CVE-2023-2861?: Medium severity. CVSS v3 base score is 6.0 out of 10.