Installer and self-extracting archive containing the installer of MLIT DenshiSeikabutsuSakuseiShienKensa system may insecurely load Dynamic Link Libraries


The installer and the self-extracting archive including the installer of MLIT DenshiSeikabutsuSakuseiShienKensa system contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

Eili Masami of Tachibana Lab. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 7.8 (High) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 6.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

Ministry of Land, Infrastructure, Transport and Tourism
  • MLIT DenshiSeikabutsuSakuseiShienKensa system Ver3.0.2 and earlier, distributed till June 20, 2017. (installer)


Arbitrary code may be executed with the privilege of the user invoking the installer or the self-extracting archive.

[Use the latest self-extracting archive and invoke the installer carefully]
Use the latest self-extracting archive according to the information provided by the developer.

New self-extracting archive has been created with the latest Lhaplus archiver which is not affected by this issue, and it was released on June 20, 2017.
When invoking the installer extracted from the self-extracting archive, make sure that no malicious DLL exists in the same directory.

Re-installation of the application is not necessary, because this issue affects the installer only.
Vendor Information

Ministry of Land, Infrastructure, Transport and Tourism
CWE (What is CWE?)

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

  1. CVE-2017-2231

  1. JVN : JVN#06337557
  2. JVN : JVNTA#91240916
  3. National Vulnerability Database (NVD) : CVE-2017-2231
Revision History

  • [2017/07/03]
      Web page was published
      Affected Products : Product version was modified
      References : Content was added