CVE-2021-34580

In mymbCONNECT24, mbCONNECT24 <= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for crafted invalid login attempts.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://cert.vde.com/en/advisories/VDE-2021-037/	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mbconnectline:mbconnect24::::::::
	cpe:2.3:a:mbconnectline:mymbconnect24::::::::

History

01 Nov 2021, 17:37

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 5.0 v3 : 7.5
CPE		cpe:2.3:a:mbconnectline:mbconnect24:::::::: cpe:2.3:a:mbconnectline:mymbconnect24::::::::
References	~~(CONFIRM) https://cert.vde.com/en/advisories/VDE-2021-037/ -~~	(CONFIRM) https://cert.vde.com/en/advisories/VDE-2021-037/ - Third Party Advisory
CWE	~~CWE-204~~	CWE-203

27 Oct 2021, 11:38

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-10-27 11:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-34580

Mitre link : CVE-2021-34580

CVE.ORG link : CVE-2021-34580

JSON object : View

Products Affected

mbconnectline

mymbconnect24
mbconnect24

CWE

CWE-203

Observable Discrepancy

CWE-204

Observable Response Discrepancy

{"id": "CVE-2021-34580", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "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": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "info@cert.vde.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-10-27T11:15:07.553", "references": [{"url": "https://cert.vde.com/en/advisories/VDE-2021-037/", "tags": ["Third Party Advisory"], "source": "info@cert.vde.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-203"}]}, {"type": "Secondary", "source": "info@cert.vde.com", "description": [{"lang": "en", "value": "CWE-204"}]}], "descriptions": [{"lang": "en", "value": "In mymbCONNECT24, mbCONNECT24 <= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for crafted invalid login attempts."}, {"lang": "es", "value": "En mymbCONNECT24, mbCONNECT24 versiones anteriores a 2.9.0 incluy\u00e9ndola, un usuario no autenticado puede enumerar los usuarios v\u00e1lidos del backend al comprobar qu\u00e9 tipo de respuesta env\u00eda el servidor para los intentos de inicio de sesi\u00f3n no v\u00e1lidos dise\u00f1ados"}], "lastModified": "2021-11-01T17:37:16.693", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C6FA138E-7298-488C-91CB-27A3AE49AA3C", "versionEndIncluding": "2.9.0"}, {"criteria": "cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6149BB15-4765-4412-A071-C7880A52E3B3", "versionEndIncluding": "2.9.0"}], "operator": "OR"}]}], "sourceIdentifier": "info@cert.vde.com"}