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.

Related CPE's

a

unionpayintl

union_pay

Vulnerable

References

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

Weaknesses

[email protected]

Primary
CWE-347

CVSS impact metrics

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

7.5 · High

  • CVSS V3.1

  • CVSS V3.0

  • CVSS V2.0

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2021-04-06T16:15:14.863

4 years ago

Last modified

2022-11-05T02:05:13.293

2 years ago