Fortinet FortiOS self-signed Fortigate CA certificate config

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9$0-$5k0.00

A vulnerability was found in Fortinet FortiOS (Firewall Software) (affected version unknown). It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component self-signed Fortigate CA certificate. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-16. As an impact it is known to affect confidentiality. The summary by CVE is:

The default configuration of Fortinet Fortigate UTM appliances uses the same Certification Authority certificate and same private key across different customers installations, which makes it easier for man-in-the-middle attackers to spoof SSL servers by leveraging the presence of the Fortinet_CA_SSLProxy certificate in a list of trusted root certification authorities.

The weakness was presented 11/02/2012 by Bitwiper as not defined posting (Website). It is possible to read the advisory at kb.cert.org. This vulnerability is known as CVE-2012-4948 since 09/17/2012. The exploitation appears to be difficult. The attack can only be initiated within the local network. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1592.004 according to MITRE ATT&CK.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 62969 (SSL Certificate Signed with the Compromised FortiGate Key), which helps to determine the existence of the flaw in a target environment. It is assigned to the family General.

The best possible mitigation is suggested to be Workaround.

The vulnerability is also documented in the databases at X-Force (79781), Vulnerability Center (SBV-37442) and Tenable (62969). Additional details are provided at kb.cert.org.

Productinfo

Type

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.3
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-16
ATT&CK: T1592.004

Local: No
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 62969
Nessus Name: SSL Certificate Signed with the Compromised FortiGate Key
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Workaround
Status: 🔍

0-Day Time: 🔍

Workaround: Import new CA Certificate

Timelineinfo

09/17/2012 🔍
11/02/2012 +46 days 🔍
11/02/2012 +0 days 🔍
11/02/2012 +0 days 🔍
11/05/2012 +3 days 🔍
11/08/2012 +3 days 🔍
11/14/2012 +6 days 🔍
11/19/2012 +5 days 🔍
11/28/2012 +9 days 🔍
04/19/2021 +3064 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: kb.cert.org
Researcher: Bitwiper
Status: Not defined

CVE: CVE-2012-4948 (🔍)
X-Force: 79781
Vulnerability Center: 37442 - Fortinet Fortigate UTM Spoofing of SSL Servers due to Same Certificate and Key For Different Clients, Medium
SecurityFocus: 56382 - Fortigate UTM appliances CA SSL Certificate Creation Security Bypass Vulnerability
OSVDB: 87048

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 11/08/2012 05:46 PM
Updated: 04/19/2021 07:09 AM
Changes: (3) vulnerability_cvss2_nvd_basescore exploit_price_0day source_nessus_risk
Complete: 🔍
Committer: olku

Comments

No comments yet. Languages: en.

Please log in to comment.

Do you want to use VulDB in your project?

Use the official API to access entries easily!