Vulnerability in Unionpayintl Union Pay
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.
EPSS: 0.009 (56.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Unionpayintl Union_pay
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Permissions Required, x_refsource_MISC)
- cve@mitre.org (Technical Description, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-23533?
- CVE-2020-23533 is a high-severity vulnerability in Unionpayintl Union Pay, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2021-04-06.
- How severe is CVE-2020-23533?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-23533 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.