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ID

VAR-202007-0079


CVE

CVE-2020-12812


TITLE

FortiOS  Vulnerability in improper handling of uppercase and lowercase letters in

Trust: 0.8

sources: JVNDB: JVNDB-2020-008709

DESCRIPTION

An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username. FortiOS contains a vulnerability related to improper handling of case sensitivity and an authentication vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. Fortinet FortiOS is a set of security operating system dedicated to the FortiGate network security platform developed by Fortinet. The system provides users with various security functions such as firewall, anti-virus, IPSec/SSLVPN, Web content filtering and anti-spam. An SSL VPN is a component of a virtual private network (VPN) that uses the Secure Sockets Layer protocol (SSL). Fortinet FortiOS 6.4.0, 6.2.0 to 6.2.3, and 6.0.9 and earlier versions of SSL VPN have a security vulnerability, the vulnerability is caused by the program not properly authenticated

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sources: NVD: CVE-2020-12812 // JVNDB: JVNDB-2020-008709 // VULHUB: VHN-165528 // VULMON: CVE-2020-12812

AFFECTED PRODUCTS

vendor:fortinetmodel:fortiosscope:gteversion:6.2.0

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vendor:fortinetmodel:fortiosscope:ltversion:6.0.10

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vendor:fortinetmodel:fortiosscope:ltversion:6.2.4

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vendor:fortinetmodel:fortiosscope:eqversion:6.4.0

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vendor:フォーティネットmodel:fortiosscope:eqversion: -

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vendor:フォーティネットmodel:fortiosscope:eqversion:6.4.0

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vendor:フォーティネットmodel:fortiosscope:eqversion:6.2.0 to 6.2.3

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vendor:フォーティネットmodel:fortiosscope:lteversion:6.0.9 and earlier

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sources: JVNDB: JVNDB-2020-008709 // NVD: CVE-2020-12812

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-12812
value: CRITICAL

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NVD: CVE-2020-12812
value: CRITICAL

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CNNVD: CNNVD-202007-1029
value: CRITICAL

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VULHUB: VHN-165528
value: HIGH

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VULMON: CVE-2020-12812
value: HIGH

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nvd@nist.gov: CVE-2020-12812
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

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VULHUB: VHN-165528
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2020-12812
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 5.9
version: 3.1

Trust: 1.0

NVD: CVE-2020-12812
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULHUB: VHN-165528 // VULMON: CVE-2020-12812 // JVNDB: JVNDB-2020-008709 // CNNVD: CNNVD-202007-1029 // NVD: CVE-2020-12812

PROBLEMTYPE DATA

problemtype:CWE-178

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problemtype:CWE-287

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problemtype:Inappropriate authentication (CWE-287) [NVD evaluation ]

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problemtype: Improper case sensitivity (CWE-178) [NVD evaluation ]

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sources: VULHUB: VHN-165528 // JVNDB: JVNDB-2020-008709 // NVD: CVE-2020-12812

THREAT TYPE

remote

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sources: CNNVD: CNNVD-202007-1029

TYPE

authorization issue

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sources: CNNVD: CNNVD-202007-1029

PATCH

title:FG-IR-19-283url:https://fortiguard.com/psirt/FG-IR-19-283

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title:Fortinet FortiOS SSL VPN Remediation measures for authorization problem vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=125172

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title:AttackerKBurl:https://github.com/irinarenteria/attackerkb-clj

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title:Security Matters 2022 Resource List Table of Contentsurl:https://github.com/triw0lf/Security-Matters-22

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title:主流供应商的一些攻击性漏洞汇总url:https://github.com/r0eXpeR/supplier

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title:PoC in GitHuburl:https://github.com/soosmile/POC

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title:Known Exploited Vulnerabilities Detectorurl:https://github.com/Ostorlab/KEV

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title:The Registerurl:https://www.theregister.co.uk/2021/04/06/in_brief_security/

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title: - url:https://www.theregister.co.uk/2022/11/18/hive_ransomware_fbi/

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sources: VULMON: CVE-2020-12812 // JVNDB: JVNDB-2020-008709 // CNNVD: CNNVD-202007-1029

EXTERNAL IDS

db:NVDid:CVE-2020-12812

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db:JVNDBid:JVNDB-2020-008709

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db:CNNVDid:CNNVD-202007-1029

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db:AUSCERTid:ESB-2020.2407

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db:CNVDid:CNVD-2020-50545

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db:VULHUBid:VHN-165528

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db:VULMONid:CVE-2020-12812

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sources: VULHUB: VHN-165528 // VULMON: CVE-2020-12812 // JVNDB: JVNDB-2020-008709 // CNNVD: CNNVD-202007-1029 // NVD: CVE-2020-12812

REFERENCES

url:https://fortiguard.com/psirt/fg-ir-19-283

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url:https://nvd.nist.gov/vuln/detail/cve-2020-12812

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url:https://www.auscert.org.au/bulletins/esb-2020.2407/

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url:https://vigilance.fr/vulnerability/fortios-privilege-escalation-via-ssl-vpn-2fa-username-case-32837

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url:https://cwe.mitre.org/data/definitions/287.html

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url:https://cwe.mitre.org/data/definitions/178.html

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url:https://github.com/irinarenteria/attackerkb-clj

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url:https://nvd.nist.gov

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sources: VULHUB: VHN-165528 // VULMON: CVE-2020-12812 // JVNDB: JVNDB-2020-008709 // CNNVD: CNNVD-202007-1029 // NVD: CVE-2020-12812

SOURCES

db:VULHUBid:VHN-165528
db:VULMONid:CVE-2020-12812
db:JVNDBid:JVNDB-2020-008709
db:CNNVDid:CNNVD-202007-1029
db:NVDid:CVE-2020-12812

LAST UPDATE DATE

2024-08-14T15:17:33.539000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-165528date:2022-07-12T00:00:00
db:VULMONid:CVE-2020-12812date:2024-02-13T00:00:00
db:JVNDBid:JVNDB-2020-008709date:2024-03-01T02:56:00
db:CNNVDid:CNNVD-202007-1029date:2022-07-14T00:00:00
db:NVDid:CVE-2020-12812date:2024-02-13T17:25:58.537

SOURCES RELEASE DATE

db:VULHUBid:VHN-165528date:2020-07-24T00:00:00
db:VULMONid:CVE-2020-12812date:2020-07-24T00:00:00
db:JVNDBid:JVNDB-2020-008709date:2020-09-18T00:00:00
db:CNNVDid:CNNVD-202007-1029date:2020-07-15T00:00:00
db:NVDid:CVE-2020-12812date:2020-07-24T23:15:12.003