# CVE-2020-8798: Missing authorization in n/a

> Remote attackers on the local network can access or modify router settings via an unauthenticated endpoint in Juplink RX4-1500 devices.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Apr 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-ccf5-cxqv-x84v

## What is CVE-2020-8798?

CVE-2020-8798 is a medium-severity missing authorization vulnerability in n/a, published on 23 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

httpd in Juplink RX4-1500 v1.0.3-v1.0.5 allows remote attackers to change or access router settings by connecting to the unauthenticated setup3.htm endpoint from the local network.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2020-8798?

It affects 1 product.


Products: Juplink Rx4-1500 Firmware.

## How do I fix CVE-2020-8798?

No fix has been published for CVE-2020-8798 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8798 being exploited?

There is no known exploitation of CVE-2020-8798 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-41028](https://insights.sbomify.com/CVE-2023-41028/): Juplink RX4-1500 Stack-based Buffer Overflow Vulnerability (critical 9.0)
- [CVE-2023-41027](https://insights.sbomify.com/CVE-2023-41027/): Juplink RX4-1500 Credential Disclosure Vulnerability (high 8.0)
- [CVE-2023-41029](https://insights.sbomify.com/CVE-2023-41029/): Juplink RX4-1500 Command Injection Vulnerability (high 8.0)
- [CVE-2023-41031](https://insights.sbomify.com/CVE-2023-41031/): Juplink RX4-1500 homemng.htm Command Injection Vulnerability (high 8.0)
- [CVE-2020-8797](https://insights.sbomify.com/CVE-2020-8797/): Command injection in n/a (medium 6.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8798 and fix it if it is affected.

What it is: CVE-2020-8798 is a medium-severity missing authorization vulnerability in n/a, published on 23 Apr 2020. 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-2020-8798 in the wild and no public exploit code.

Affected product: n/a. 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-2020-8798/ (Markdown: https://insights.sbomify.com/CVE-2020-8798/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8798
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8798
- OSV: https://osv.dev/vulnerability/CVE-2020-8798

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8798/
Summaries are generated and may contain mistakes; the official description above is the record.