[Japanese]

JVNDB-2018-000016

LINE for iOS fails to verify SSL server certificates

Overview

LINE for iOS provided by LINE Corporation fails to verify SSL server certificates due to the vulnerability existed in the Third Party SDK which is incorporated in the application.

LINE Corporation reported this vulnerability to JPCERT/CC to notify users of its solution through JVN. JPCERT/CC and LINE Corporation coordinated under the 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


LINE Corporation
  • LINE for iOS version 7.1.3 to 7.1.5

Note that versions prior to 7.1.3 and versions above 7.1.6 are not affected by this vulnerability.
Impact

A man-in-the-middle attack may allow an attacker to eavesdrop on an encrypted communication.
According to the developer, text messages, LINE login credentials (passwords), free voice calls, and free video calls are not affected by this vulnerability.

For details, refer to the information provided by the developer.
Solution

[Update the Software]
Update the software to the latest version according to the information provided by the developer.
This vulnerability was addressed in LINE for iOS version 7.16 released in 2017 November 24.
Vendor Information

LINE Corporation
CWE (What is CWE?)

CVE (What is CVE?)

  1. CVE-2018-0518
References

  1. JVN : JVN#75453852
  2. National Vulnerability Database (NVD) : CVE-2018-0518
Revision History

  • [2018/02/22]
      Web page was published
  • [2018/06/14]
      References : Content was added

Date Public2018/02/20
Date First Published2018/02/22
Date Last Updated2018/06/14