Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-23909

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
13/05/2021
Last modified:
25/05/2021

Description

An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mercedes-benz:hermes:2.1:*:*:*:*:*:*:*
cpe:2.3:h:mercedes-benz:a_220:-:*:*:*:*:*:*:*
cpe:2.3:h:mercedes-benz:a_220_4matic:-:*:*:*:*:*:*:*
cpe:2.3:h:mercedes-benz:e_350:-:*:*:*:*:*:*:*
cpe:2.3:h:mercedes-benz:e_350_4matic:-:*:*:*:*:*:*:*
cpe:2.3:h:mercedes-benz:eqc:-:*:*:*:*:*:*:*
cpe:2.3:h:mercedes-benz:gle_350:-:*:*:*:*:*:*:*
cpe:2.3:h:mercedes-benz:gle_350_4matic:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools