Installer of PDF Digital Signature Plugin provided by the Ministry of Justice may insecurely load Dynamic Link Libraries


Installer of PDF Digital Signature Plugin provided by the Ministry of Justice contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

Yuji Tounai of NTT Communications Corporation and 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

The Ministry of Justice
  • PDF Digital Signature Plugin (G2.30) and earlier (installer), distributed till June 29, 2017


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

[Use the Latest Installer]
Use the latest installer according to the information provided by the developer.
Users who already have installed PDF Degital Signature Plugin do not need to re-install the application, because this issue affects the installer only.
Vendor Information

The Ministry of Justice
CWE (What is CWE?)

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

  1. CVE-2017-2233

  1. JVN : JVN#45134765
  2. JVN : JVNTA#91240916
  3. National Vulnerability Database (NVD) : CVE-2017-2233
Revision History

  • [2017/06/30]
      Web page was published
      Affected Products : Product version was modified
      References : Content was added