# CVE-2018-7994: Denial of service in NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6600; USG9500

> Remote attackers can cause device reboots by exhausting memory through excessive questionnaire processing in Huawei network security products.

- **Severity:** High 7.5 (`CVSS:3.0/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:** 31 Jul 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-jfrw-3j8q-2c86

## What is CVE-2018-7994?

CVE-2018-7994 is a high-severity denial of service vulnerability in Huawei Technologies Co., Ltd. NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6600; USG9500, published on 31 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Some Huawei products IPS Module V500R001C50; NGFW Module V500R001C50; V500R002C10; NIP6300 V500R001C50; NIP6600 V500R001C50; NIP6800 V500R001C50; Secospace USG6600 V500R001C50; USG9500 V500R001C50 have a memory leak vulnerability. The software does not release allocated memory properly when processing Protal questionnaire. A remote attacker could send a lot questionnaires to the device, successful exploit could cause the device to reboot since running out of memory.

Weakness: CWE-772 (Missing Release of Resource after Effective Lifetime)

## Which versions are affected by CVE-2018-7994?

It affects 7 products.


Products: Huawei Ips Module, Huawei Ngfw Module, Huawei Nip6300, Huawei Nip6600, Huawei Nip6800, Huawei Secospace Usg6600, Huawei Usg9500.

## How do I fix CVE-2018-7994?

No fix has been published for CVE-2018-7994 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7994 being exploited?

There is no known exploitation of CVE-2018-7994 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7994 and fix it if it is affected.

What it is: CVE-2018-7994 is a high-severity denial of service vulnerability in Huawei Technologies Co., Ltd. NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6600; USG9500, published on 31 Jul 2018. 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-2018-7994 in the wild and no public exploit code.

Affected product: Huawei Technologies Co., Ltd. NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6600; USG9500. 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-2018-7994/ (Markdown: https://insights.sbomify.com/CVE-2018-7994/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7994
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7994
- OSV: https://osv.dev/vulnerability/CVE-2018-7994

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-7994/
Summaries are generated and may contain mistakes; the official description above is the record.