[Japanese]

JVNDB-2024-000029

Toyoko Inn official App vulnerable to improper server certificate verification

Overview

Toyoko Inn official App provided by Toyoko Inn IT Solution Co., Ltd. is vulnerable to improper server certificate verification (CWE-295).

Ryo Nihonyanagi of BroadBand Security, Inc. 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 4.8 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products


TOYOKO INN IT SHUUKYAKU SOLUTION, CO.,LTD
  • Official Android app for Hotel Chain Toyoko Inn. versions prior 1.3.14
  • Official iPhone app for Hotel Chain Toyoko Inn. versions prior to 1.13.0

Impact

A man-in-the-middle attack may allow an attacker to eavesdrop on an encrypted communication.
Solution

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

TOYOKO INN IT SHUUKYAKU SOLUTION, CO.,LTD
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2024-27440
References

  1. JVN : JVN#52919306
Revision History

  • [2024/03/06]
      Web page was published

Date Public2024/03/06
Date First Published2024/03/06
Date Last Updated2024/03/06