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Kaspersky Advisory

(K-Mercedes-Benz-2022-001) Integer Overflow in UserData

Type

Integer Overflow

Vendor

Mercedes-Benz

Affected products

Mercedes Benz NTG 6

CVSS v3 Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3 Score

5.5 medium

CVE ID

CVE-2023-34406

Vulnerability description

An issue was discovered on Mercedes Benz NTG 6.  A possible integer overflow exists in the user data import/export  function of NTG 6 head units. To perform  this attack, local access to USB interface of the car is needed. With prepared data, an attacker can cause the User-Data service to fail. The failed service instance will restart automatically.

Remediation

Apply updates per vendor instructions.

Acknowledgements

Vulnerability was discovered by Mikhail Evdokimov (Kaspersky).

References

https://github.com/klsecservices/Advisories/blob/master/K-Mercedes-Benz-2022-001.md Report EN: https://securelist.com/mercedes-benz-head-unit-security-research/115218/ RU: https://securelist.ru/mercedes-benz-head-unit-security-research/111516/ https://github.com/klsecservices/Publications/blob/master/Mercedes-Benz_Head_Unit_security_research_report.pdf