Mercedes Benz Head-Unit NTG6 User Data integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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2.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Mercedes Benz Head-Unit NTG6 and classified as problematic. Impacted is an unknown function of the component User Data Handler. This manipulation causes integer overflow. This vulnerability is registered as CVE-2023-34406. It is feasible to perform the attack on the physical device. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in Mercedes Benz Head-Unit NTG6 (the affected version unknown). Affected by this vulnerability is an unknown part of the component User Data Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect availability. The summary by CVE is:

An issue was discovered on Mercedes Benz NTG 6. A possible integer overflow exists in the user data import/export function of NTG (New Telematics Generation) 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.

It is possible to read the advisory at securelist.com. This vulnerability is known as CVE-2023-34406 since 06/05/2023. The exploitation appears to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-38484). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.1
VulDB Meta Temp Score: 2.1

VulDB Base Score: 2.1
VulDB Temp Score: 2.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/05/2023 🔍
02/14/2025 +620 days 🔍
02/14/2025 +0 days 🔍
01/07/2026 +327 days 🔍

Sourcesinfo

Advisory: securelist.com
Status: Not defined

CVE: CVE-2023-34406 (🔍)
GCVE (CVE): GCVE-0-2023-34406
GCVE (VulDB): GCVE-100-295795
EUVD: 🔍

Entryinfo

Created: 02/14/2025 08:37
Updated: 01/07/2026 09:51
Changes: 02/14/2025 08:37 (52), 03/18/2025 05:14 (1), 01/07/2026 09:51 (1)
Complete: 🔍
Cache ID: 216::103

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