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InfotainmentApplication · Visteon

CVE-2024-8356

HIGH · 7.8 CVSS v3.1 Published 2024-11-22
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
80/100
Remediation priority · High
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Visteon Infotainment VIP MCU Code Insufficient Validation of Data Authenticity Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Visteon Infotainment systems. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the firmware update process of the VIP microcontroller. The process does not properly verify authenticity of the supplied firmware image before programming it into internal memory. An attacker can leverage this vulnerability to escalate privileges execute arbitrary code in the context of the VIP MCU. Was ZDI-CAN-23758.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The vulnerability exists in the VIP microcontroller firmware update process which fails to properly validate the authenticity of firmware images before writing them to internal flash memory. An attacker with existing low-privileged code execution can supply a malicious firmware image that gets programmed without cryptographic verification, allowing privilege escalation to execute arbitrary code in the VIP MCU context.

MitigationImplement cryptographic signature verification for all firmware images using a secure boot chain, ensuring each firmware update is validated against a trusted certificate or key before programming.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
InfotainmentApplication
Affected:= cmu150_na_74.00.324a

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify infotainment head unit model and firmware version
    Access the system settings or diagnostic interface and retrieve the infotainment firmware version. On the CMU150 North America unit, this is typically found in Settings > System Information > Infotainment Version, or via the diagnostic CAN bus message INF_FW_VER.
    Affected if The installed firmware version is exactly cmu150_na_74.00.324a
  2. Confirm VIP MCU firmware version
    Query the VIP microcontroller firmware version through the diagnostic port or debug interface. This may require sending a specific CAN message or accessing the VIP MCU via JTAG/SWD if available.
    Affected if The VIP MCU firmware is running on the vulnerable cmu150_na_74.00.324a infotainment system image
  3. Check if firmware update mechanism is accessible
    Determine whether the firmware update interface for the VIP MCU is exposed or callable from the application processor context. Look for update-related services, debug commands, or update APIs accessible to lower-privileged code.
    Affected if A firmware update pathway exists that can be invoked from low-privileged code execution context
  4. Inspect secure boot configuration
    Examine the VIP MCU configuration or boot settings to determine whether cryptographic signature verification is enforced for firmware updates. Check for secure boot flags, validation settings, or certificate storage.
    Affected if Secure boot or signature verification is not enabled for VIP MCU firmware updates (firmware can be written without cryptographic validation)

A user is affected if they are running the cmu150_na_74.00.324a firmware version on a Visteon CMU150 infotainment unit and the VIP MCU firmware update process lacks cryptographic signature verification.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement cryptographic signature verification for all firmware images using a secure boot chain, ensuring each firmware update is validated against a trusted certificate or key before programming.

Fix this in Infotainment Scoped from the published advisory
  • Consultation8.0 h
  • Implementation24.0 h
  • Testing16.0 h
  • Review / QA8.0 h
56.0 hours of engineering $9,760
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-8356 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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