What is CVE-2023-40216?

CVE-2023-40216 is a medium-severity vulnerability in Openbsd, classified under Missing Authorization. CVSS score: 5.5/10. Published 2023-08-10.

How severe is CVE-2023-40216?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Auth bypass in Openbsd

CVE-2023-40216

OpenBSD 7.3 before errata 014 is missing an argument-count bounds check in console terminal emulation. This could cause incorrect memory access and a kernel crash after receiving crafted DCS or CSI terminal escape sequences.

Vulnerability class: Broken Access Control

EPSS: 0.001 (3.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Openbsd — versions 7.3
N/a — versions n/a

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

cve@mitre.org (Patch, Vendor Advisory)
cve@mitre.org (Patch)

Frequently asked questions

What is CVE-2023-40216?: CVE-2023-40216 is a medium-severity vulnerability in Openbsd, classified under Missing Authorization. CVSS score: 5.5/10. Published 2023-08-10.
How severe is CVE-2023-40216?: Medium severity. CVSS v3 base score is 5.5 out of 10.