# CVE-2017-17318: Denial of service in E5771h-937

> Attackers can cause denial of service on Huawei mobile broadband devices by sending specially crafted HTTP requests that exhaust memory.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Apr 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-hx3x-474x-cc52

## What is CVE-2017-17318?

CVE-2017-17318 is a medium-severity denial of service vulnerability in Huawei Technologies Co., Ltd. E5771h-937, published on 30 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Huawei MBB (Mobile Broadband) products E5771h-937 with the versions before E5771h-937TCPU-V200R001B328D62SP00C1133 and the versions before E5771h-937TCPU-V200R001B329D05SP00C1308 have a Denial of Service (DoS) vulnerability. When an attacker accessing device sends special http request to device, the webserver process will try to apply too much memory which can cause the device to become unable to respond. An attacker can launch a DoS attack by exploiting this vulnerability.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-17318?

It affects 1 product.


Products: Huawei E5771h-937 Firmware.

## How do I fix CVE-2017-17318?

No fix has been published for CVE-2017-17318 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-17318 being exploited?

There is no known exploitation of CVE-2017-17318 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-17318 and fix it if it is affected.

What it is: CVE-2017-17318 is a medium-severity denial of service vulnerability in Huawei Technologies Co., Ltd. E5771h-937, published on 30 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-17318 in the wild and no public exploit code.

Affected product: Huawei Technologies Co., Ltd. E5771h-937. 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-2017-17318/ (Markdown: https://insights.sbomify.com/CVE-2017-17318/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-17318
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-17318
- OSV: https://osv.dev/vulnerability/CVE-2017-17318

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-17318/
Summaries are generated and may contain mistakes; the official description above is the record.