# CVE-2020-9124: Denial of service in CloudEngine 12800

> An unauthenticated remote attacker can cause a memory leak in Huawei CloudEngine switches by sending specific messages, potentially leading to denial of service.

- **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:** 29 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-3rff-xjq9-pg37

## What is CVE-2020-9124?

CVE-2020-9124 is a high-severity denial of service vulnerability in Huawei CloudEngine 12800, published on 29 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

There is a memory leak vulnerability in some versions of Huawei CloudEngine product. An unauthenticated, remote attacker may exploit this vulnerability by sending specific message to the affected product. Due to not release the allocated memory properly, successful exploit may cause memory leak.

Weakness: CWE-401 (Missing Release of Memory after Effective Lifetime)

## Which versions are affected by CVE-2020-9124?

It affects 4 products.


Products: Huawei Cloudengine 12800 Firmware, Huawei Cloudengine 5800 Firmware, Huawei Cloudengine 6800 Firmware, Huawei Cloudengine 7800 Firmware.

## How do I fix CVE-2020-9124?

No fix has been published for CVE-2020-9124 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9124 being exploited?

There is no known exploitation of CVE-2020-9124 in the wild and no public exploit code.

## Other vulnerabilities in Huawei CloudEngine 12800

- [CVE-2016-6178](https://insights.sbomify.com/CVE-2016-6178/): Other in n/a (critical 9.8)
- [CVE-2020-9207](https://insights.sbomify.com/CVE-2020-9207/): Auth bypass in CloudEngine 12800 (high 7.8)
- [CVE-2021-40008](https://insights.sbomify.com/CVE-2021-40008/): Denial of service in CloudEngine 12800;CloudEngine 5800;CloudEngine 6800;CloudEngine 7800 (high 7.5)
- [CVE-2021-22328](https://insights.sbomify.com/CVE-2021-22328/): Denial of service in CloudEngine 12800;CloudEngine 5800;CloudEngine 6800;CloudEngine 7800 (high 7.5)
- [CVE-2021-22332](https://insights.sbomify.com/CVE-2021-22332/): Use after free in CloudEngine 12800;CloudEngine 5800;CloudEngine 6800;CloudEngine 7800 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9124 and fix it if it is affected.

What it is: CVE-2020-9124 is a high-severity denial of service vulnerability in Huawei CloudEngine 12800, published on 29 Dec 2020. 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-2020-9124 in the wild and no public exploit code.

Affected product: Huawei CloudEngine 12800. 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-2020-9124/ (Markdown: https://insights.sbomify.com/CVE-2020-9124/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9124
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9124
- OSV: https://osv.dev/vulnerability/CVE-2020-9124

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-9124/
Summaries are generated and may contain mistakes; the official description above is the record.