[Japanese]

JVNDB-2024-000103

The installer of e-Tax software(common program) vulnerable to privilege escalation

Overview

The installer of e-Tax software(common program) provided by National Tax Agency contains a vulnerability which allows uploading a malicious DLL to be executed with higher privileges than that of an general user by altering registry (CWE-268).

Takashi Yoshikawa of Mitsui Bussan Secure Directions, Inc. 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: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
Affected Products


National Tax Agency JAPAN
  • e-Tax Software (common program) all versions distributed on the NTA website before 2024 September 24

Impact

A malicious DLL prepared by an attacker may be executed with higher privileges than the application privilege.
Solution

[Use the latest installer]
Use the latest installer provided by the developer.
Vendor Information

National Tax Agency JAPAN
CWE (What is CWE?)

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

  1. CVE-2024-47045
References

  1. JVN : JVN#57749899
Revision History

  • [2024/09/24]
      Web page was published

Date Public2024/09/24
Date First Published2024/09/24
Date Last Updated2024/09/24