Published:2020/07/29 Last Updated:2020/10/08
JVN#40400577
TOYOTA MOTOR's Global TechStream vulnerable to buffer overflow
Overview
TOYOTA MOTOR's Global TechStream (GTS) contains a buffer overflow vulnerability.
Products Affected
- Global TechStream (GTS) for TOYOTA dealers and independent repairers version 15.10.032 and earlier
Description
Global TechStream (GTS) is a diagnostic tool that Toyota Motor Corporation provides for Toyota dealers technicians and independent repairers to utilize.
Global TechStream (GTS) contains a buffer overflow vulnerability (CWE-121).
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 Status
| Vendor | Link |
| TOYOTA MOTOR CORPORATION | TOYOTA diagnosis Tool Web Page (TOYOTA dealers only) |
| Global TechStream (GTS) site for independent repairers |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Base Score:
4.1
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
CVSS v2
AV:L/AC:M/Au:N/C:P/I:P/A:P
Base Score:
4.4
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
Tomoya Kitagawa of LAC Co., Ltd. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2020-5610 |
| JVN iPedia |
JVNDB-2020-000049 |
Update History
- 2020/08/04
- Fixed the information under the section [Description].
- 2020/10/08
- Updated the information under the section [Products Affected], [Description], and [Vendor Status].