[Japanese]

JVNDB-2020-000049

TOYOTA MOTOR's Global TechStream vulnerable to buffer overflow

Overview

Global TechStream (GTS) is a diagnostic tool that Toyota Motor Corporation provides for Toyota dealers technicians to utilize.
Global TechStream (GTS) contains a buffer overflow vulnerability (CWE-121).

Tomoya Kitagawa of LAC Co., Ltd. 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 4.1 (Medium) [IPA Score]
  • Attack Vector: physics
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 4.4 (Medium) [IPA Score]
  • Access Vector: Local
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products


TOYOTA MOTOR CORPORATION
  • Global TechStream (GTS) for TOYOTA dealers version 15.10.032 and earlier

Impact

An attacker may execute arbitrary code or cause a denial of service (DoS) condition.
Solution

[Update the Software]
The developer states that the update fixing this vulnerability is available.

For the details, refer to [Vendor Status].
Vendor Information

TOYOTA MOTOR CORPORATION
CWE (What is CWE?)

  1. Buffer Errors(CWE-119) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2020-5610
References

  1. JVN : JVN#40400577
Revision History

  • [2020/07/29]
      Web page was published
  • [2020/08/04]
      Overview was modified