Unscored CVE-2020-36285 EUVD-2020-23827GHSA-9r9h-rjvp-wrff

Union Pay up to 3.3.12, for iOS mobile apps, contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability, allows att…

Published Apr 6, 2021 · Updated Aug 4, 2024 · Assigned by mitre

Description

Union Pay up to 3.3.12, for iOS mobile apps, 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.

References

https://www.dropbox.com/s/6smwnbrp0kgsgrc/poc_code.py?dl=0
https://www.dropbox.com/s/czbkdr73tclq2nr/UnionPay_Vulnerability_Report.txt?dl=0
http://mobitec.ie.cuhk.edu.hk/cve_2020/