mixi for Android information management vulnerability


mixi for Android contains an issue which stores friends' comments on a SD card.

mixi for Android provided by mixi, Inc. contains an issue which stores friends' comments on a SD card, therefore other applications can access this information directly from the SD card.

Kazuhiko Kusano of Graduate School of Information Sciences, Tohoku University reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

mixi, Inc.
  • mixi versions prior to 4.3.0


If a user of the affected product uses a malicious Android application, friends' comments may be disclosed.

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

mixi, Inc.
  • Google Play : mixi (Japanese only)
CWE (What is CWE?)

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

  1. CVE-2012-4007

  1. JVN : JVN#92038939
  2. National Vulnerability Database (NVD) : CVE-2012-4007
Revision History

  • [2012/08/17]
      Web page was published