# CVE-2023-28056: Missing authorization in CPG BIOS

> A local authenticated administrator can modify UEFI variables in Dell BIOS due to improper input validation.

- **Severity:** Medium 5.1 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Jun 2023
- **Updated:** 8 Nov 2024
- **Also known as:** GHSA-4x47-m3gh-g332

## What is CVE-2023-28056?

CVE-2023-28056 is a medium-severity missing authorization vulnerability in Dell Alienware Area 51m R2 Firmware, published on 23 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potentially exploit this vulnerability in order to modify a UEFI variable.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-28056?

It affects 434 products.


Products: Dell Alienware Area 51m R1 Firmware, Dell Alienware Area 51m R2 Firmware, Dell Alienware Aurora R11 Firmware, Dell Alienware Aurora R12 Firmware, Dell Alienware Aurora R13 Firmware, Dell Alienware Aurora R15 Firmware, Dell Alienware M15 R2 Firmware, Dell Alienware M15 R3 Firmware, Dell Alienware M15 R4 Firmware, Dell Alienware M15 R6 Firmware, Dell Alienware M15 R7 Firmware, Dell Alienware M16 Firmware, Dell Alienware M17 R2 Firmware, Dell Alienware M17 R3 Firmware, Dell Alienware M17 R4 Firmware, Dell Alienware X14 Firmware, Dell Alienware X15 R1 Firmware, Dell Alienware X15 R2 Firmware, Dell Alienware X17 R1 Firmware, Dell Alienware X17 R2 Firmware and 414 more.

## How do I fix CVE-2023-28056?

No fix has been published for CVE-2023-28056 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28056 being exploited?

There is no known exploitation of CVE-2023-28056 in the wild and no public exploit code.

## Other vulnerabilities in Dell Alienware Area 51m R2 Firmware

- [CVE-2022-32488](https://insights.sbomify.com/CVE-2022-32488/): Code injection in CPG BIOS (high 8.2)
- [CVE-2022-32489](https://insights.sbomify.com/CVE-2022-32489/): Other in CPG BIOS (high 8.2)
- [CVE-2022-34398](https://insights.sbomify.com/CVE-2022-34398/): Race condition in CPG BIOS (high 7.5)
- [CVE-2022-32485](https://insights.sbomify.com/CVE-2022-32485/): Code injection in CPG BIOS (high 7.5)
- [CVE-2022-32487](https://insights.sbomify.com/CVE-2022-32487/): Code injection in CPG BIOS (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28056 and fix it if it is affected.

What it is: CVE-2023-28056 is a medium-severity missing authorization vulnerability in Dell Alienware Area 51m R2 Firmware, published on 23 Jun 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-2023-28056 in the wild and no public exploit code.

Affected product: Dell Alienware Area 51m R2 Firmware. 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-2023-28056/ (Markdown: https://insights.sbomify.com/CVE-2023-28056/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28056
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28056
- OSV: https://osv.dev/vulnerability/CVE-2023-28056

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-28056/
Summaries are generated and may contain mistakes; the official description above is the record.