JVN#30352845: The installer of The Public Certification Service for Individuals "The JPKI user's software" may insecurely load Dynamic Link Libraries

The installer of The Public Certification Service for Individuals “The JPKI user’s software” provided by Japan Agency for Local Authority Information Systems (J-LIS) contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

Impact

Arbitrary code may be executed with the privilege of the user invoking the installer.

Solution

Use the latest installer of The Public Certification Service for Individuals “The JPKI user’s software”
Apply the patch “KB2533623” on Windows 7 and then use the latest installer of The Public Certification Service for Individuals “The JPKI user’s software”, according to the information provided by the developer.
Users who already have installed The Public Certification Service for Individuals “The JPKI user’s software” do not need to re-install the application, because this issue affects the installer only.

Products Affected

• The Public Certification Service for Individuals “The JPKI user’s software” Ver3.1 and earlier
  According to the developer, the software is affected by this vulnerability only when it is operated under Windows 7.