[Japanese]

JVNDB-2016-000122

Sushiro App fails to verify SSL server certificates

Overview

Sushiro App provided by AKINDO SUSHIRO CO., LTD. fails to verify SSL server certificates.

Yuta Teshima of Cyber Defense Institute, 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


AKINDO SUSHIRO CO., LTD.
  • Sushiro App for iOS version 2.1.16 and earlier
  • Sushiro App for Android version 2.1.16.1 and earlier

Impact

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

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

AKINDO SUSHIRO CO., LTD.
  • App Store : Sushiro (in Japanese)
  • Google Play : Sushiro (in Japanese)
CWE (What is CWE?)

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

  1. CVE-2016-4830
References

  1. JVN : JVN#30260727
  2. National Vulnerability Database (NVD) : CVE-2016-4830
Revision History

  • [2016/06/29]
      Web page was published
    [2017/05/23]
      References : Content was added

Date Public2016/06/29
Date First Published2016/06/29
Date Last Updated2017/05/23