Fortinet FortiGate up to 5.6.13/6.0.11/6.2.5/6.4.3 SNI Client Hello TLS information disclosure

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.
2.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Fortinet FortiGate up to 5.6.13/6.0.11/6.2.5/6.4.3. This vulnerability affects unknown code of the component SNI Client Hello TLS Handler. Such manipulation leads to information disclosure. This vulnerability is traded as CVE-2020-15936. Access to the local network is required for this attack to succeed. There is no exploit available.

Detailsinfo

A vulnerability was found in Fortinet FortiGate up to 5.6.13/6.0.11/6.2.5/6.4.3 (Firewall Software) and classified as problematic. Affected by this issue is an unknown function of the component SNI Client Hello TLS Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The weakness was shared 03/02/2022 as FG-IR-20-091. The advisory is available at fortiguard.com. This vulnerability is handled as CVE-2020-15936 since 07/24/2020. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.3
VulDB Meta Temp Score: 2.3

VulDB Base Score: 2.0
VulDB Temp Score: 2.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 2.6
CNA Vector (Fortinet, Inc.): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/24/2020 🔍
03/02/2022 +586 days 🔍
03/02/2022 +0 days 🔍
03/04/2022 +2 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-20-091
Status: Confirmed

CVE: CVE-2020-15936 (🔍)
GCVE (CVE): GCVE-0-2020-15936
GCVE (VulDB): GCVE-100-194054

Entryinfo

Created: 03/02/2022 07:58
Updated: 03/04/2022 13:04
Changes: 03/02/2022 07:58 (49), 03/04/2022 13:04 (1)
Complete: 🔍
Cache ID: 216::103

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