What is CVE-2018-6916?

CVE-2018-6916 is a critical-severity vulnerability in Freebsd, classified under Use After Free. CVSS score: 9.8/10. Published 2018-03-09.

How severe is CVE-2018-6916?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Use After Free in Freebsd

CVE-2018-6916

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p7, 10.4-STABLE, 10.4-RELEASE-p7, and 10.3-RELEASE-p28, the kernel does not properly validate IPsec packets coming from a trusted host. Additionally, a use-after-free vulnerability exists in the IPsec AH handling code. This issue could cause a system crash or other unpredictable results.

Vulnerability class: Use-After-Free

EPSS: 0.021 (80.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freebsd — versions 10.3, All supported versions of FreeBSD, 10.4

Weakness classification (CWE)

CWE-416 — Use After Free

References

secteam@freebsd.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
secteam@freebsd.org (x_refsource_FREEBSD, vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-6916?: CVE-2018-6916 is a critical-severity vulnerability in Freebsd, classified under Use After Free. CVSS score: 9.8/10. Published 2018-03-09.
How severe is CVE-2018-6916?: Critical severity. CVSS v3 base score is 9.8 out of 10.