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FreeBSD : FreeBSD -- ipsec validation and use-after-free (dca7ced0-2796-11e8-95ec-a4badb2f4699)

critical Nessus Plugin ID 108353

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Due to a lack of strict checking, an attacker from a trusted host can send a specially constructed IP packet that may lead to a system crash.

Additionally, a use-after-free vulnerability in the AH handling code could cause unpredictable results. Impact : Access to out of bounds or freed mbuf data can lead to a kernel panic or other unpredictable results.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?830ed0a6

Plugin Details

Severity: Critical

ID: 108353

File Name: freebsd_pkg_dca7ced0279611e895eca4badb2f4699.nasl

Version: 1.5

Type: local

Published: 3/15/2018

Updated: 12/7/2018

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:freebsd, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Settings/ParanoidReport, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 3/14/2018

Vulnerability Publication Date: 3/7/2018

Reference Information

CVE: CVE-2018-6916

FreeBSD: SA-18:01.ipsec