# CVE-2023-2992: Denial of service in Fan Power Controller (FPC)

> Unauthenticated attackers can cause a denial of service on Lenovo SMM and FPC management web servers, requiring a reboot to restore access.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Jun 2023
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-gqhx-wxjr-rphx

## What is CVE-2023-2992?

CVE-2023-2992 is a high-severity denial of service vulnerability in Lenovo Fan Power Controller (FPC), published on 26 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An unauthenticated  denial of service vulnerability exists in the SMM v1, SMM v2, and FPC management web server which can be triggered under crafted conditions.  Rebooting SMM or FPC will restore access to the management web server.

Weakness: CWE-405 (Asymmetric Resource Consumption (Amplification))

## Which versions are affected by CVE-2023-2992?

It affects 8 products.


Products: Lenovo Nextscale N1200 Enclosure Firmware, Lenovo Thinkagile Cp-Cb-10 Firmware, Lenovo Thinkagile Cp-Cb-10e Firmware, Lenovo Thinkagile Hx Enclosure Certified Node Firmware, Lenovo Thinkagile Vx Enclosure Firmware, Lenovo Thinksystem D2 Enclosure Firmware, Lenovo Thinksystem Da240 Enclosure Firmware, Lenovo Thinksystem Dw612 Enclosure Firmware.

## How do I fix CVE-2023-2992?

No fix has been published for CVE-2023-2992 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2992 being exploited?

There is no known exploitation of CVE-2023-2992 in the wild and no public exploit code.

## Other vulnerabilities in Lenovo Fan Power Controller (FPC)

- [CVE-2024-2659](https://insights.sbomify.com/CVE-2024-2659/): Command injection in SMM, SMM2, FPC (high 7.2)
- [CVE-2023-2993](https://insights.sbomify.com/CVE-2023-2993/): Privilege escalation in Fan Power Controller (FPC) (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2992 and fix it if it is affected.

What it is: CVE-2023-2992 is a high-severity denial of service vulnerability in Lenovo Fan Power Controller (FPC), published on 26 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-2992 in the wild and no public exploit code.

Affected product: Lenovo Fan Power Controller (FPC). 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-2023-2992/ (Markdown: https://insights.sbomify.com/CVE-2023-2992/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2992
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2992
- OSV: https://osv.dev/vulnerability/CVE-2023-2992

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-2992/
Summaries are generated and may contain mistakes; the official description above is the record.