CVE-2020-7566

A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.

CVSS v3 7.3 HIGH
CVSS v2.0 4.3 MEDIUM

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.2

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 5.5 / Impact : 4.9

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04	Third Party Advisory US Government Resource
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-11-19 22:15

Updated : 2024-02-28 18:08

NVD link : CVE-2020-7566

Mitre link : CVE-2020-7566

CVE.ORG link : CVE-2020-7566

JSON object : View

Products Affected

schneider-electric

modicon_m221
modicon_m221_firmware

CWE

CWE-334

Small Space of Random Values

{"id": "CVE-2020-7566", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 5.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.1}]}, "published": "2020-11-19T22:15:15.020", "references": [{"url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04", "tags": ["Third Party Advisory", "US Government Resource"], "source": "cybersecurity@se.com"}, {"url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/", "tags": ["Vendor Advisory"], "source": "cybersecurity@se.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "cybersecurity@se.com", "description": [{"lang": "en", "value": "CWE-334"}]}], "descriptions": [{"lang": "en", "value": "A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller."}, {"lang": "es", "value": "CWE-334: Se presenta una vulnerabilidad de Espaci\u00f3n Peque\u00f1o de Valores Aleatorios ??en Modicon M221 (todas las referencias, todas las versiones) que podr\u00eda permitir al atacante romper las claves de cifrado cuando el atacante ha capturado el tr\u00e1fico entre EcoStruxure Machine - Software b\u00e1sico y el controlador Modicon M221"}], "lastModified": "2022-02-03T16:14:24.547", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D7AC7A26-CCFA-40E0-8111-5A3385D34E8B"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "BB0D83F4-B718-47AB-AFB8-B576CB138AAC"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cybersecurity@se.com"}