# CVE-2023-28895: Hard-coded password for access to power controller chip memory

> Attackers with physical access can use a hard-coded password to gain full control over the power controller chip in the infotainment system.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Dec 2023
- **Updated:** 2 Dec 2024
- **Also known as:** GHSA-f52g-mqvx-jmjp

## What is CVE-2023-28895?

CVE-2023-28895 is a low-severity vulnerability in JOYNEXT MIB3 Infotainment Unit, published on 1 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The password for access to the debugging console of the PoWer Controller chip (PWC) of the MIB3 infotainment is hard-coded in the firmware. The console allows attackers with physical access to the MIB3 unit to gain full control over the PWC chip.

Vulnerability found on Škoda Superb III (3V3) - 2.0 TDI manufactured in 2022.

Weakness: CWE-798 (Use of Hard-coded Credentials), CWE-259 (Use of Hard-coded Password)

## Which versions are affected by CVE-2023-28895?

It affects 1 product.


Products: Preh Mib3 Firmware.

## How do I fix CVE-2023-28895?

No fix has been published for CVE-2023-28895 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28895 being exploited?

There is no known exploitation of CVE-2023-28895 in the wild and no public exploit code.

## Other vulnerabilities in JOYNEXT MIB3 Infotainment Unit

- [CVE-2023-28896](https://insights.sbomify.com/CVE-2023-28896/): Weak encoding for password in UDS services (low 3.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28895 and fix it if it is affected.

What it is: CVE-2023-28895 is a low-severity vulnerability in JOYNEXT MIB3 Infotainment Unit, published on 1 Dec 2023. 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-2023-28895 in the wild and no public exploit code.

Affected product: JOYNEXT MIB3 Infotainment Unit. 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-2023-28895/ (Markdown: https://insights.sbomify.com/CVE-2023-28895/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28895
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28895
- OSV: https://osv.dev/vulnerability/CVE-2023-28895

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-28895/
Summaries are generated and may contain mistakes; the official description above is the record.