CVE-2020-23533

Union Pay up to 1.2.0, for web based versions contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability, allows attackers to shop for free in merchants' websites and mobile apps, via a crafted authentication code (MAC) which is generated based on a secret key which is NULL.

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 NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
http://mobitec.ie.cuhk.edu.hk/cve_2020/	Permissions Required
https://cwe.mitre.org/data/definitions/347.html	Technical Description
https://www.dropbox.com/s/6smwnbrp0kgsgrc/poc_code.py?dl=0	Third Party Advisory
https://www.dropbox.com/s/czbkdr73tclq2nr/UnionPay_Vulnerability_Report.txt?dl=0	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:unionpayintl:union_pay:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-04-06 16:15

Updated : 2024-02-28 18:28

NVD link : CVE-2020-23533

Mitre link : CVE-2020-23533

CVE.ORG link : CVE-2020-23533

JSON object : View

Products Affected

unionpayintl

union_pay

CWE

CWE-347

Improper Verification of Cryptographic Signature

{"id": "CVE-2020-23533", "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:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "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:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-04-06T16:15:14.863", "references": [{"url": "http://mobitec.ie.cuhk.edu.hk/cve_2020/", "tags": ["Permissions Required"], "source": "cve@mitre.org"}, {"url": "https://cwe.mitre.org/data/definitions/347.html", "tags": ["Technical Description"], "source": "cve@mitre.org"}, {"url": "https://www.dropbox.com/s/6smwnbrp0kgsgrc/poc_code.py?dl=0", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.dropbox.com/s/czbkdr73tclq2nr/UnionPay_Vulnerability_Report.txt?dl=0", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "Union Pay up to 1.2.0, for web based versions contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability, allows attackers to shop for free in merchants' websites and mobile apps, via a crafted authentication code (MAC) which is generated based on a secret key which is NULL."}, {"lang": "es", "value": "Union Pay versiones hasta 1.2.0, para versiones basadas en web, contiene un CWE-347: Verificaci\u00f3n Inapropiada de la vulnerabilidad de Firma Criptogr\u00e1fica, permite a atacantes comprar gratis en los sitios web y aplicaciones m\u00f3viles de comerciantes, por medio de un c\u00f3digo de autenticaci\u00f3n (MAC) dise\u00f1ado. basado en una clave secreta que es NULL"}], "lastModified": "2022-11-05T02:05:13.293", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:unionpayintl:union_pay:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BA107514-9F6F-43E9-BA77-D96AB3D6AFAC", "versionEndIncluding": "1.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}