CVE-2020-23533

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2020-23533
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-06T16:15:14
  • Last Modified Date
  • 2022-11-05T02:05:13
Weakness Enumerations
CWE URL
CWE-347 http://cwe.mitre.org/data/definitions/347.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:unionpayintl:union_pay:*:*:*:*:*:*:*:* 1 OR 1.2.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
http://mobitec.ie.cuhk.edu.hk/cve_2020/ Permissions Required
https://cwe.mitre.org/data/definitions/347.html Technical Description
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-23533
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-23533
History
Created Old Value New Value Data Type Notes
2022-05-10 07:16:24 Added to TrackCVE
2022-12-06 01:15:51 2021-04-06T16:15Z 2021-04-06T16:15:14 CVE Published Date updated
2022-12-06 01:15:51 2022-11-05T02:05:13 CVE Modified Date updated
2022-12-06 01:15:51 Analyzed Vulnerability Status updated
2022-12-06 01:15:56 References updated