# CVE-2023-32155: Tesla Model 3 bcmdhd Out-Of-Bounds Write Local Privilege Escalation Vulnerability

> Local attackers with wifi subsystem access can exploit an out-of-bounds write in the bcmdhd driver to escalate privileges and execute kernel code.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 May 2024
- **Updated:** 18 Sep 2024
- **Also known as:** GHSA-q6gx-vcq3-62cj

## What is CVE-2023-32155?

CVE-2023-32155 is a high-severity memory corruption vulnerability in Tesla Model 3, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Tesla Model 3 bcmdhd Out-Of-Bounds Write Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected Tesla Model 3 vehicles. An attacker must first obtain the ability to execute code on the wifi subsystem in order to exploit this vulnerability.

The specific flaw exists within the bcmdhd driver. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.
. Was ZDI-CAN-20733.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-32155?

It affects 1 product.


Products: Tesla Model 3 Firmware.

## How do I fix CVE-2023-32155?

No fix has been published for CVE-2023-32155 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-32155 being exploited?

There is no known exploitation of CVE-2023-32155 in the wild and no public exploit code.

## Other vulnerabilities in Tesla Model 3

- [CVE-2023-32156](https://insights.sbomify.com/CVE-2023-32156/): Tesla Model 3 Gateway Firmware Signature Validation Bypass Vulnerability (critical 9.0)
- [CVE-2022-42430](https://insights.sbomify.com/CVE-2022-42430/): Use after free in Model 3 (high 8.8)
- [CVE-2022-42431](https://insights.sbomify.com/CVE-2022-42431/): Memory corruption in Model 3 (high 8.8)
- [CVE-2019-9977](https://insights.sbomify.com/CVE-2019-9977/): Code injection in n/a (high 8.8)
- [CVE-2022-3093](https://insights.sbomify.com/CVE-2022-3093/): Code injection in Model 3 (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-32155 and fix it if it is affected.

What it is: CVE-2023-32155 is a high-severity memory corruption vulnerability in Tesla Model 3, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-32155 in the wild and no public exploit code.

Affected product: Tesla Model 3. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-32155/ (Markdown: https://insights.sbomify.com/CVE-2023-32155/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-32155
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-32155
- OSV: https://osv.dev/vulnerability/CVE-2023-32155

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-32155/
Summaries are generated and may contain mistakes; the official description above is the record.