# CVE-2020-1873: Denial of service in NIP6800;Secospace USG6600;USG9500

> An unauthenticated attacker can cause a device reboot by sending a malformed message to Huawei NIP and USG series network devices.

- **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:** 28 Feb 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-w4wr-grpf-cvhh

## What is CVE-2020-1873?

CVE-2020-1873 is a high-severity denial of service vulnerability in Huawei Nip6800 Firmware, published on 28 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

NIP6800;Secospace USG6600;USG9500 products with versions of V500R001C30; V500R001C60SPC500; V500R005C00SPC100 have an out-of-bounds read vulnerability. An unauthenticated attacker crafts malformed message with specific parameter and sends the message to the affected products. Due to insufficient validation of message, which may be exploited to cause the device reboot.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2020-1873?

It affects 3 products.


Products: Huawei Nip6800 Firmware, Huawei Secospace Usg6600 Firmware, Huawei Usg9500 Firmware.

## How do I fix CVE-2020-1873?

No fix has been published for CVE-2020-1873 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-1873 being exploited?

There is no known exploitation of CVE-2020-1873 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Nip6800 Firmware

- [CVE-2020-1860](https://insights.sbomify.com/CVE-2020-1860/): Auth bypass in NIP6800;Secospace USG6600;USG9500 (high 7.5)
- [CVE-2020-1876](https://insights.sbomify.com/CVE-2020-1876/): Memory corruption in NIP6800;Secospace USG6600;USG9500 (high 7.5)
- [CVE-2020-1881](https://insights.sbomify.com/CVE-2020-1881/): Denial of service in NIP6800;Secospace USG6600;USG9500 (high 7.5)
- [CVE-2020-1815](https://insights.sbomify.com/CVE-2020-1815/): Denial of service in NIP6800 (high 7.5)
- [CVE-2020-1816](https://insights.sbomify.com/CVE-2020-1816/): Denial of service in NIP6800 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-1873 and fix it if it is affected.

What it is: CVE-2020-1873 is a high-severity denial of service vulnerability in Huawei Nip6800 Firmware, published on 28 Feb 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-2020-1873 in the wild and no public exploit code.

Affected product: Huawei Nip6800 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-2020-1873/ (Markdown: https://insights.sbomify.com/CVE-2020-1873/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-1873
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-1873
- OSV: https://osv.dev/vulnerability/CVE-2020-1873

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-1873/
Summaries are generated and may contain mistakes; the official description above is the record.