Yahoo! Japan Box for Android issue where it fails to verify SSL server certificates


Yahoo! Japan Box for Android provided by Yahoo Japan Corporation contains an issue where it fails to verify SSL server certificates.

Yahoo Japan Corporation reported this vulnerability to JPCERT/CC to notify users of this issue through JVN.
JPCERT/CC coordinated with Yahoo Japan Corporation to publish this JVN advisory under the Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

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

Yahoo Japan Corporation
  • Yahoo! Japan Box for Android ver 1.5.4 and earlier


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

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

Yahoo Japan Corporation
CWE (What is CWE?)

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

  1. CVE-2014-5881

  1. JVN : JVN#48270605
  2. JVN : JVNVU#90369988 (in Japanese)
  3. US-CERT Vulnerability Note : VU#582497
Revision History

  • [2014/09/25]
      Web page was published