[Japanese]

JVNDB-2024-000094

"@cosme" App fails to restrict custom URL schemes properly

Overview

"@cosme" App provided by istyle Inc. provides the function to access a requested URL using Custom URL Scheme. The App does not restrict access to the function properly (CWE-939) which may be exploited to direct the App to access any sites.

Pantuhong Sorasiri of LAC Co., Ltd. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 3.3 (Low) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None
Affected Products


istyle Inc.
  • "@cosme" App for Android versions prior to 5.69.0
  • "@cosme" App for iOS versions prior to 6.74.0

Impact

A remote attacker may lead a user to access an arbitrary website via the vulnerable App. As a result, the user may become a victim of a phishing attack.
Solution

[Update the Application]
Update the application to the latest version according to the information provided by the developer.
Vendor Information

istyle Inc.
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2024-45203
References

  1. JVN : JVN#81570776
Revision History

  • [2024/09/09]
      Web page was published

Date Public2024/09/09
Date First Published2024/09/09
Date Last Updated2024/09/09