SSL Certificate Signed with the Compromised FortiGate Key

medium Nessus Plugin ID 62969
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 SSL certificate for this service was signed by a certificate authority (CA) whose private key has been compromised.

Description

The X.509 certificate of the remote host was signed by a certificate belonging to a Certificate Authority (CA) found in FortiGate devices.
The private key corresponding to the CA has been compromised, meaning that the remote host's X.509 certificate cannot be trusted.

Certificate chains descending from this CA could allow an attacker to perform man-in-the-middle attacks and decode traffic.

Solution

Configure the device to use a device-specific CA certificate.

Plugin Details

Severity: Medium

ID: 62969

File Name: ssl_fortigate.nasl

Version: 1.7

Type: remote

Family: General

Published: 11/19/2012

Updated: 12/4/2019

Dependencies: ssl_supported_versions.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2012-4948

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 3.9

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

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

Vulnerability Information

CPE: x-cpe:/h:fortinet:fortigate

Required KB Items: Settings/ParanoidReport, SSL/Supported

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/22/2012

Reference Information

CVE: CVE-2012-4948

BID: 56382

CERT: 111708