Fortinet FortiOS < 5.6.12 / 6.x < 6.0.8 Information Disclosure MitM (FG-IR-18-100)

medium Nessus Plugin ID 131283
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote host is affected by an information disclosure vulnerability.

Description

The remote host is running a version of FortiOS prior to 5.6.12 or 6.x prior to 6.0.8. It is, therefore, affected by an information disclosure man-in-the-middle vulnerability in the FortiGuard services communication protocol due to the use of a hardcoded cryptographic key. A remote attacker with knowledge of the hardcoded key can exploit this via the network to eavesdrop and modify information sent and received from FortiGuard servers.

Solution

Upgrade to Fortinet FortiOS version to 5.6.12, 6.0.8 or later.

See Also

https://fortiguard.com/psirt/FG-IR-18-100

http://www.nessus.org/u?ca502f28

http://www.nessus.org/u?db9c0891

Plugin Details

Severity: Medium

ID: 131283

File Name: fortios_FG-IR-18-100.nasl

Version: 1.15

Type: local

Family: Firewalls

Published: 11/25/2019

Updated: 7/6/2021

Dependencies: fortinet_version.nbin, ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2018-9195

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Host/Fortigate/version, Host/Fortigate/model

Excluded KB Items: Host/windows_local_checks

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/28/2019

Vulnerability Publication Date: 11/21/2019

Reference Information

CVE: CVE-2018-9195