# CVE-2023-34431: Privilege escalation in Intel(R) Server Board BIOS firmware

> A privileged local user can escalate privileges due to improper input validation in Intel Server Board BIOS firmware.

- **Severity:** High 8.2 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **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:** 14 Nov 2023
- **Updated:** 30 Aug 2024
- **Also known as:** GHSA-gqwc-m2xc-gx3c

## What is CVE-2023-34431?

CVE-2023-34431 is a high-severity vulnerability in Intel(R) Server Board BIOS firmware, published on 14 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper input validation in some Intel(R) Server Board BIOS firmware may allow a privileged user to potentially enable escalation of privilege via local access

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-34431?

It affects 33 products.


Products: Intel Compute Module Hns2600bpb24 Firmware, Intel Compute Module Hns2600bpb Firmware, Intel Compute Module Hns2600bpblc24 Firmware, Intel Compute Module Hns2600bpblc24r Firmware, Intel Compute Module Hns2600bpblc Firmware, Intel Compute Module Hns2600bpblcr Firmware, Intel Compute Module Hns2600bpbr Firmware, Intel Compute Module Hns2600bpq24 Firmware, Intel Compute Module Hns2600bpq24r Firmware, Intel Compute Module Hns2600bpq Firmware, Intel Compute Module Hns2600bpqr Firmware, Intel Compute Module Hns2600bps24 Firmware, Intel Compute Module Hns2600bps24r Firmware, Intel Compute Module Hns2600bps Firmware, Intel Compute Module Hns2600bpsr Firmware, Intel Compute Module Liquid-Cooled Hns2600bpbrct Firmware, Intel Server Board M10jnp2sb Firmware, Intel Server Board M20ntp2sb Firmware, Intel Server Board M70klp2sb Firmware, Intel Server Board S2600bpb Firmware and 13 more.

## How do I fix CVE-2023-34431?

No fix has been published for CVE-2023-34431 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34431 being exploited?

There is no known exploitation of CVE-2023-34431 in the wild and no public exploit code.

## Other vulnerabilities in Intel(R) Server Board BIOS firmware

- [CVE-2022-33945](https://insights.sbomify.com/CVE-2022-33945/): Privilege escalation in Intel(R) Server board and Intel(R) Server System BIOS firmware (high 8.2)
- [CVE-2022-29262](https://insights.sbomify.com/CVE-2022-29262/): Privilege escalation in Intel(R) Server Board BIOS firmware (high 7.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34431 and fix it if it is affected.

What it is: CVE-2023-34431 is a high-severity vulnerability in Intel(R) Server Board BIOS firmware, published on 14 Nov 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-2023-34431 in the wild and no public exploit code.

Affected product: Intel(R) Server Board BIOS 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-2023-34431/ (Markdown: https://insights.sbomify.com/CVE-2023-34431/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34431
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34431
- OSV: https://osv.dev/vulnerability/CVE-2023-34431

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-34431/
Summaries are generated and may contain mistakes; the official description above is the record.