CVE-2020-23533 | Severity.io

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

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