Infotainment: Missing Immutable Root of Trust in Hardware
CVE-2024-8357 is a high-severity missing immutable root of trust in hardware vulnerability in Infotainment from Visteon, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected Infotainment versions: cmu150_NA_74.00.324A; cmu150_na_74.00.324a. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.32% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Infotainment you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Visteon | Infotainment | cmu150_NA_74.00.324A; cmu150_na_74.00.324a | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 3.0 | 7.8 | High | CNA (trendmicro.com) |
Official description
Visteon Infotainment App SoC Missing Immutable Root of Trust in Hardware Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Visteon Infotainment systems. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the configuration of the application system-on-chip (SoC). The issue results from the lack of properly configured hardware root of trust. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the boot process. Was ZDI-CAN-23759.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Missing Immutable Root of Trust in Hardware
A missing immutable root of trust in the hardware results in the ability to bypass secure boot or execute untrusted or adversarial boot code.
How developers prevent this class of flaw
- When architecting the system, the RoT should be designated for storage in a memory that does not allow further programming/writes. Note that, for components like ROM, secure patching/update features should be supported to allow authenticated and authorized updates in the field.
- During implementation and test, the RoT memory location should be demonstrated to not allow further programming/writes.
More Missing Immutable Root of Trust in Hardware vulnerabilities (CWE-1326)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- zerodayinitiative.com/advisories/ZDI-24-1189/Third Party Advisory
Other vulnerabilities in Infotainment
- 7.8 High severity
Recent Missing Immutable Root of Trust in Hardware vulnerabilities
- 7.5 High severity
- 7.6 High severity
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