Vulnerability Details CVE-2020-36284
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 32.3%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://mobitec.ie.cuhk.edu.hk/cve_2020/
- 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/
- https://www.dropbox.com/s/6smwnbrp0kgsgrc/poc_code.py?dl=0
- https://www.dropbox.com/s/czbkdr73tclq2nr/UnionPay_Vulnerability_Report.txt?dl=0
Products affected by CVE-2020-36284
-
cpe:2.3:a:unionpayintl:union_pay:*