CVE-2020-23533

 

Published at: - 06-04-2021 06:15

Last modified: - 10-07-2022 11:15

Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

 

Verification logic

 

Reference

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

 

Keywords

NVD

 

CVE-2020-23533

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures