pfSense 2.3.x < 2.3.5-p2 / 2.4.x < 2.4.3-p1 Multiple Vulnerabilities (SA-18_04 / SA-18_05)

high Nessus Plugin ID 119886

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Synopsis

The remote firewall host is affected by multiple vulnerabilities.

Description

According to its self-reported version number, the remote pfSense install is a version 2.3.x prior to 2.3.5-p2 or 2.4.x prior to 2.4.3-p1. It is, therefore, affected by multiple vulnerabilities:

- In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of privileged kernel data. (CVE-2018-6921)
- A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that could lead to local privilege escalation. (CVE-2018-8897)

Solution

Upgrade to pfSense version 2.3.5-p2 / 2.4.3-p1 or later.

Plugin Details

Severity: High

ID: 119886

File Name: pfsense_SA-18_05.nasl

Version: 1.3

Type: remote

Family: Firewalls

Published: 12/27/2018

Updated: 4/5/2019

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2018-8897

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:pfsense:pfsense, cpe:/a:bsdperimeter:pfsense

Required KB Items: Host/pfSense

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/1/2018

Vulnerability Publication Date: 5/1/2018

Exploitable With

Metasploit (Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability)

Reference Information

CVE: CVE-2018-6920, CVE-2018-6921, CVE-2018-8897

Detections

Analytics