# CVE-2017-8155: Missing authorization in B2338-168

> An attacker can execute arbitrary commands on the outdoor unit of Huawei CPE devices without authentication, leading to full device control.

- **Severity:** High 8.4 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 22 Nov 2017
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-4x74-rjv6-jffp

## What is CVE-2017-8155?

CVE-2017-8155 is a high-severity missing authorization vulnerability in Huawei Technologies Co., Ltd. B2338-168, published on 22 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The outdoor unit of Customer Premise Equipment (CPE) product B2338-168 V100R001C00 has a no authentication vulnerability on a certain port. After accessing the network between the indoor and outdoor units of the CPE, an attacker can deliver commands to the specific port of the outdoor unit and execute them without authentication. Successful exploit could allow the attacker to take control over the outdoor unit.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2017-8155?

It affects 1 product.


Products: Huawei B2338-168 Firmware.

## How do I fix CVE-2017-8155?

No fix has been published for CVE-2017-8155 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-8155 being exploited?

There is no known exploitation of CVE-2017-8155 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Technologies Co., Ltd. B2338-168

- [CVE-2017-8156](https://insights.sbomify.com/CVE-2017-8156/): Auth bypass in B2338-168 (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-8155 and fix it if it is affected.

What it is: CVE-2017-8155 is a high-severity missing authorization vulnerability in Huawei Technologies Co., Ltd. B2338-168, published on 22 Nov 2017. 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-2017-8155 in the wild and no public exploit code.

Affected product: Huawei Technologies Co., Ltd. B2338-168. 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-2017-8155/ (Markdown: https://insights.sbomify.com/CVE-2017-8155/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-8155
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-8155
- OSV: https://osv.dev/vulnerability/CVE-2017-8155

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-8155/
Summaries are generated and may contain mistakes; the official description above is the record.