Description
Union Pay up to 3.4.93.4.9, for android, 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
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://www.dropbox.com/s/czbkdr73tclq2nr/UnionPay_Vulnerability_Report.txt?dl=0
Third Party Advisory
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
Vulnerability status
Analyzed
Published
2021-04-06T16:15:15.317
4 years agoLast modified
2021-04-09T17:14:48.227
4 years ago