Improper restriction of XML external entity references (XXE) in Shinseiyo Sogo Soft


Shinseiyo Sogo Soft provided by The Ministry of Justice improperly restricts XML external entity references (XXE) (CWE-611).

Taku Toyama of NEC Corporation 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 2.5 (Low) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 1.2 (Low) [IPA Score]
  • Access Vector: Local
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

The Ministry of Justice
  • Shinseiyo Sogo Soft (7.9A) and earlier


By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker.

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

The Ministry of Justice
CWE (What is CWE?)

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

  1. CVE-2023-27527

  1. JVN : JVN#73178249
Revision History

  • [2023/04/19]
      Web page was published