# CVE-2017-7456: Denial of service in n/a

> Remote attackers can cause a denial of service in Moxa MXView by sending overly long payloads during client login.

- **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:** 14 Apr 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-823x-2crf-qhp9

## What is CVE-2017-7456?

CVE-2017-7456 is a high-severity denial of service vulnerability in n/a, published on 14 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Moxa MXView 2.8 allows remote attackers to cause a Denial of Service by sending overly long junk payload for the MXView client login credentials.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-7456?

It affects 1 product.


Products: Moxa Mxview.

## How do I fix CVE-2017-7456?

No fix has been published for CVE-2017-7456 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7456 being exploited?

There is no known exploitation of CVE-2017-7456 in the wild and no public exploit code.

Public exploit code:

- Moxa MXview 2.8 - Denial of Service (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2021-40390](https://insights.sbomify.com/CVE-2021-40390/): Auth bypass in MXView Series (critical 10.0)
- [CVE-2021-38454](https://insights.sbomify.com/CVE-2021-38454/): Moxa MXview Network Management Software (critical 10.0)
- [CVE-2021-38456](https://insights.sbomify.com/CVE-2021-38456/): Moxa MXview Network Management Software (critical 9.8)
- [CVE-2021-38458](https://insights.sbomify.com/CVE-2021-38458/): Moxa MXview Network Management Software (critical 9.8)
- [CVE-2020-13536](https://insights.sbomify.com/CVE-2020-13536/): Privilege escalation in Moxa (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7456 and fix it if it is affected.

What it is: CVE-2017-7456 is a high-severity denial of service vulnerability in n/a, published on 14 Apr 2017. 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-2017-7456 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-2017-7456/ (Markdown: https://insights.sbomify.com/CVE-2017-7456/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7456
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7456
- OSV: https://osv.dev/vulnerability/CVE-2017-7456

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-7456/
Summaries are generated and may contain mistakes; the official description above is the record.