# CVE-2021-22320: Denial of service in IPS Module;NGFW Module;NIP6600;NIP6800;Secospace USG6300;Secospace USG6500;Secospace USG6600

> Attackers can cause denial of service on Huawei security appliances by sending malicious messages to a vulnerable module.

- **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:** 22 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-8j72-6cmw-672j

## What is CVE-2021-22320?

CVE-2021-22320 is a high-severity denial of service vulnerability in Huawei Ips Module Firmware, published on 22 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages correctly. Attackers can exploit this vulnerability by sending malicious messages to an affected module. This can lead to denial of service. Affected product include some versions of IPS Module, NGFW Module, NIP6600, NIP6800, Secospace USG6300, Secospace USG6500 and Secospace USG6600.

## Which versions are affected by CVE-2021-22320?

It affects 7 products.


Products: Huawei Ips Module Firmware, Huawei Ngfw Module Firmware, Huawei Nip6600 Firmware, Huawei Nip6800 Firmware, Huawei Secospace Usg6300 Firmware, Huawei Secospace Usg6500 Firmware, Huawei Secospace Usg6600 Firmware.

## How do I fix CVE-2021-22320?

No fix has been published for CVE-2021-22320 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22320 being exploited?

There is no known exploitation of CVE-2021-22320 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Ips Module Firmware

- [CVE-2020-9099](https://insights.sbomify.com/CVE-2020-9099/): Auth bypass in IPS Module; NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6300; Secospace USG6500; Secospace USG6600; USG9500 (critical 9.8)
- [CVE-2016-4576](https://insights.sbomify.com/CVE-2016-4576/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-37129](https://insights.sbomify.com/CVE-2021-37129/): Memory corruption in IIPS Module;NGFW Module;NIP6600;S12700;S1700;S2700;S5700;S6700;S7700;S9700;USG9500 (high 7.5)
- [CVE-2017-15348](https://insights.sbomify.com/CVE-2017-15348/): Denial of service in IPS Module,NGFW Module,NIP6300,NIP6600,Secospace USG6300,Secospace USG6500,Secospace USG6600,USG9500, (high 7.5)
- [CVE-2017-17153](https://insights.sbomify.com/CVE-2017-17153/): Denial of service in IPS,Module,NGFW,Module,NIP6300,NIP6600,Secospace,USG6300,Secospace,USG6500,Secospace,USG6600,USG9500 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22320 and fix it if it is affected.

What it is: CVE-2021-22320 is a high-severity denial of service vulnerability in Huawei Ips Module Firmware, published on 22 Mar 2021. 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-2021-22320 in the wild and no public exploit code.

Affected product: Huawei Ips Module 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-2021-22320/ (Markdown: https://insights.sbomify.com/CVE-2021-22320/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22320
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22320
- OSV: https://osv.dev/vulnerability/CVE-2021-22320

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-22320/
Summaries are generated and may contain mistakes; the official description above is the record.