CVE-2021-23906 : An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on

An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution.

Published 2021-05-13 19:15:08

Updated 2021-05-25 13:49:33

Source MITRE

View at NVD, CVE.org

Vulnerability category: Input validationExecute code

Products affected by CVE-2021-23906

Mercedes-benz » Mercedes-benz User Experience
Versions up to, including, (<=) 2021
cpe:2.3:a:mercedes-benz:mercedes-benz_user_experience:*:*:*:*:*:*:*:*
Matching versions
When used together with: Mercedes-benz » A 220 » Version: N/A
When used together with: Mercedes-benz » A 220 4matic » Version: N/A
When used together with: Mercedes-benz » E 350 » Version: N/A
When used together with: Mercedes-benz » E 350 4matic » Version: N/A
When used together with: Mercedes-benz » EQC » Version: N/A
When used together with: Mercedes-benz » Gle 350 » Version: N/A
When used together with: Mercedes-benz » Gle 350 4matic » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-23906

EPSS FAQ

0.32%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 52 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-23906

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.1	LOW	AV:L/AC:L/Au:N/C:P/I:N/A:N	3.9	2.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
1.8	LOW	CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N	0.4	1.4	MITRE
Attack Vector: Physical Attack Complexity: High Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: Low Availability: None
6.8	MEDIUM	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	0.9	5.9	NIST
Attack Vector: Physical Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-23906

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-23906

https://media.daimler.com/marsMediaSite/en/instance/ko.xhtml?oid=49946866

Collaboration of Mercedes-Benz and Tencent Security Keen Lab to strengthen car IT security - Daimler Global Media Site
Third Party Advisory

CVEs referencing this url
https://keenlab.tencent.com/en/2021/05/12/Tencent-Security-Keen-Lab-Experimental-Security-Assessment-on-Mercedes-Benz-Cars/

Tencent Security Keen Lab: Experimental Security Assessment of Mercedes-Benz Cars | Keen Security Lab Blog
Third Party Advisory

CVEs referencing this url
https://keenlab.tencent.com/en/whitepapers/Mercedes_Benz_Security_Research_Report_Final.pdf

Exploit;Third Party Advisory

CVEs referencing this url

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Vulnerability Details : CVE-2021-23906

Products affected by CVE-2021-23906

Exploit prediction scoring system (EPSS) score for CVE-2021-23906

CVSS scores for CVE-2021-23906

CWE ids for CVE-2021-23906

References for CVE-2021-23906