Published:2013/03/26  Last Updated:2013/03/26

Simeji vulnerable to information disclosure


Simeji contains an issue in the access permissions for the certain files.

Products Affected

  • Simeji 4.8.1 and earlier


Simeji is a Japanese Input Method Editor (IME) for Android devices. Simeji contains an issue in the access permissions for the certain files.


If a user of the affected product uses other malicious Android application, information managed by the affected product may be disclosed.


Update the software
Update to the latest version according to the information provided by the developer.

Vendor Status


JPCERT/CC Addendum

This JVN publication was delayed to 2013/03/26 after the developer fix was developed. From the fiscal year 2011, JPCERT/CC is using a new vendor coordination procedure. This new procedure came from the recommendation of the fiscal year 2010 "Study Group on Information System Vulnerability Handling" aimed at more timely JVN publications.

Vulnerability Analysis by JPCERT/CC

Analyzed on 2013.03.26

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the user must be convinced to take a difficult or suspicious action. If the honest user must have elevated privileges, they are likely to be more suspicious
  • Low
Exploit Complexity some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures


This analysis assumes that the user is tricked into installing a malicious application.


Gaku Mochizuki of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2013-0718
JVN iPedia JVNDB-2013-000029