pfSense 2.4.x < 2.4.4-p1 Multiple Vulnerabilities (SA-18_09)

medium Nessus Plugin ID 146059

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VPR Score: 5.9

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 2.4.x prior to 2.4.4-p1. It is, therefore, affected by multiple vulnerabilities, including the following:

- An exploitable command injection vulnerability exists in the way Netgate pfSense CE 2.4.4-RELEASE processes the parameters of a specific POST request. The attacker can exploit this and gain the ability to execute arbitrary commands on the system. An attacker needs to be able to send authenticated POST requests to the administration web interface. Command injection is possible in the `powerd_normal_mode` parameter. (CVE-2018-4019)

- An exploitable command injection vulnerability exists in the way Netgate pfSense CE 2.4.4-RELEASE processes the parameters of a specific POST request. The attacker can exploit this and gain the ability to execute arbitrary commands on the system. An attacker needs to be able to send authenticated POST requests to the administration web interface. Command injection is possible in the `powerd_ac_mode` POST parameter parameter. (CVE-2018-4020)

- An exploitable command injection vulnerability exists in the way Netgate pfSense CE 2.4.4-RELEASE processes the parameters of a specific POST request. The attacker can exploit this and gain the ability to execute arbitrary commands on the system. An attacker needs to be able to send authenticated POST requests to the administration web interface. Command injection is possible in the `powerd_battery_mode` POST parameter. (CVE-2018-4021)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to pfSense version 2.4.4-p1 or later, or apply patches as noted in the vendor advisory.

Plugin Details

Severity: Medium

ID: 146059

File Name: pfsense_2_4_4_p1.nasl

Version: 1.2

Type: remote

Family: Firewalls

Published: 2/2/2021

Updated: 2/3/2021

Dependencies: pfsense_detect.nbin

Risk Information

Risk Factor: Medium

VPR Score: 5.9

CVSS Score Source: CVE-2018-4019

CVSS v2.0

Base Score: 6.5

Temporal Score: 4.8

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.2

Temporal Score: 6.3

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

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

Required KB Items: Host/pfSense

Exploit Ease: No known exploits are available

Patch Publication Date: 11/15/2018

Vulnerability Publication Date: 9/28/2018

Reference Information

CVE: CVE-2018-4019, CVE-2018-4020, CVE-2018-4021, CVE-2018-6925, CVE-2018-17154, CVE-2018-17155