pfSense < 2.4.4-p3 Multiple Vulnerabilities

medium Nessus Plugin ID 146430

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VPR Score: 3.6

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 prior to 2.4.4-p3. It is, therefore, affected by multiple vulnerabilities, including the following:

- In pfSense 2.4.4_1, blocking of source IP addresses on the basis of failed HTTPS authentication is inconsistent with blocking of source IP addresses on the basis of failed SSH authentication (the behavior does not match the sshguard documentation), which might make it easier for attackers to bypass intended access restrictions. (CVE-2018-20799)

- The expiretable configuration in pfSense 2.4.4_1 establishes block durations that are incompatible with the block durations implemented by sshguard, which might make it easier for attackers to bypass intended access restrictions. (CVE-2018-20798)

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-p3 or later, or apply patches as noted in the vendor advisory.

Plugin Details

Severity: Medium

ID: 146430

File Name: pfsense_2_4_4_p3.nasl

Version: 1.2

Type: remote

Family: Firewalls

Published: 2/11/2021

Updated: 2/12/2021

Dependencies: pfsense_detect.nbin

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2018-20798

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

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

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: 1/29/2019

Vulnerability Publication Date: 1/29/2019

Reference Information

CVE: CVE-2018-20798, CVE-2018-20799