What is CVE-2020-7452?

CVE-2020-7452 is a critical-severity vulnerability in Freebsd, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.1/10. Published 2020-04-29.

How severe is CVE-2020-7452?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Buffer overflow in Freebsd

CVE-2020-7452

In FreeBSD 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, and 11.3-RELEASE before 11.3-RELEASE-p7, incorrect use of a user-controlled pointer in the epair virtual network module allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.

Vulnerability class: Buffer Overflow

EPSS: 0.018 (76.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Freebsd — versions 11.3, 12.1
N/a Freebsd — versions 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, 11.3-RELEASE before 11.3-RELEASE-p7

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

secteam@freebsd.org (x_refsource_CONFIRM, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-7452?: CVE-2020-7452 is a critical-severity vulnerability in Freebsd, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.1/10. Published 2020-04-29.
How severe is CVE-2020-7452?: Critical severity. CVSS v3 base score is 9.1 out of 10.