# CVE-2023-0847: Memory corruption in DASH 7 Alliance Protocol stack implementation

> Out-of-bounds write in Sub-IoT DASH 7 Alliance protocol allows remote code execution or crashes when non-default settings are used.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Feb 2023
- **Updated:** 16 Jan 2025
- **Also known as:** GHSA-r28r-5q3r-jfhm

## What is CVE-2023-0847?

CVE-2023-0847 is a medium-severity memory corruption vulnerability in Sub-IoT DASH 7 Alliance Protocol stack implementation, published on 28 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Sub-IoT implementation of the DASH 7 Alliance protocol has a vulnerability that can lead to an out-of-bounds write prior to implementation version 0.5.0. If the protocol has been compiled using default settings, this will only grant the attacker access to allocated but unused memory. However, if it was configured using non-default settings, there is the possibility that exploiting this vulnerability could lead to system crashes and remote code execution.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-0847?

It affects 1 product.


Products: Dash7-Alliance Dash7 Alliance Protcol.

## How do I fix CVE-2023-0847?

No fix has been published for CVE-2023-0847 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0847 being exploited?

There is no known exploitation of CVE-2023-0847 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0847 and fix it if it is affected.

What it is: CVE-2023-0847 is a medium-severity memory corruption vulnerability in Sub-IoT DASH 7 Alliance Protocol stack implementation, published on 28 Feb 2023. 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-2023-0847 in the wild and no public exploit code.

Affected product: Sub-IoT DASH 7 Alliance Protocol stack implementation. 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-2023-0847/ (Markdown: https://insights.sbomify.com/CVE-2023-0847/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0847
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0847
- OSV: https://osv.dev/vulnerability/CVE-2023-0847

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0847/
Summaries are generated and may contain mistakes; the official description above is the record.