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 v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : 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
https://www.dropbox.com/s/czbkdr73tclq2nr/UnionPay_Vulnerability_Report.txt?dl=0	Third Party Advisory
http://mobitec.ie.cuhk.edu.hk/cve_2020/	Permissions Required
https://www.dropbox.com/s/6smwnbrp0kgsgrc/poc_code.py?dl=0	Third Party Advisory
https://cwe.mitre.org/data/definitions/347.html

Configurations

Configuration 1 (hide)

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

Information

Published : 2021-04-06 16:15

Updated : 2022-07-10 21:15

NVD link : CVE-2020-23533

Mitre link : CVE-2020-23533

JSON object : View

Products Affected

unionpayintl

union_pay

CWE

CWE-347

Improper Verification of Cryptographic Signature

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