Vulnerability Details CVE-2020-23533
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.0%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://mobitec.ie.cuhk.edu.hk/cve_2020/
- https://cwe.mitre.org/data/definitions/347.html
- 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://cwe.mitre.org/data/definitions/347.html
- 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-2020-23533
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cpe:2.3:a:unionpayintl:union_pay:*