CVE-2020-12812

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://fortiguard.com/psirt/FG-IR-19-283	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios:6.4.0:::::::*

History

No history.

Information

Published : 2020-07-24 23:15

Updated : 2024-02-13 17:25

NVD link : CVE-2020-12812

Mitre link : CVE-2020-12812

CVE.ORG link : CVE-2020-12812

JSON object : View

Products Affected

fortinet

fortios

CWE

CWE-178

Improper Handling of Case Sensitivity

CWE-287

Improper Authentication

{"id": "CVE-2020-12812", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2020-07-24T23:15:12.003", "references": [{"url": "https://fortiguard.com/psirt/FG-IR-19-283", "tags": ["Vendor Advisory"], "source": "psirt@fortinet.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-178"}, {"lang": "en", "value": "CWE-287"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Una vulnerabilidad de autenticaci\u00f3n inapropiada en SSL VPN en FortiOS versiones 6.4.0, 6.2.0 a 6.2.3, 6.0.9 y posteriores, puede resultar en que un usuario sea capaz de iniciar sesi\u00f3n con \u00e9xito sin que sea requerido el segundo factor de autenticaci\u00f3n (FortiToken) si cambiaron el caso de su nombre de usuario"}], "lastModified": "2024-02-13T17:25:58.537", "cisaActionDue": "2022-05-03", "cisaExploitAdd": "2021-11-03", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "756167D1-ED53-4EC7-88B3-D82E329A2FA4", "versionEndExcluding": "6.0.10"}, {"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BD0966DA-A4B1-4C78-862C-3CB9557DCC4C", "versionEndExcluding": "6.2.4", "versionStartIncluding": "6.2.0"}, {"criteria": "cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C6E45EB-4C8C-4777-9200-08B14595A3A7"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@fortinet.com", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Fortinet FortiOS SSL VPN Improper Authentication Vulnerability"}