CVE-2018-6916

CRITICAL

FreeBSD < 11.1 - Use-After-Free in IPsec AH Handling

Title source: llm

Description

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.

References (2)

Core 2

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1040460

Patch, Vendor Advisory vendor-advisory x_refsource_freebsd

https://www.freebsd.org/security/advisories/FreeBSD-SA-18:01.ipsec.asc

Scores

CVSS v3 9.8

EPSS 0.0049

EPSS Percentile 65.8%

Attack Vector NETWORK

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

Details

CWE

CWE-416

Status published

Products (3)

freebsd/freebsd 10.3 p28

freebsd/freebsd 10.4 (2 CPE variants)

freebsd/freebsd 11.0 - 11.1

Published Mar 09, 2018

Tracked Since Feb 18, 2026