# CVE-2023-44839: Memory corruption in n/a

> Attackers can cause a denial of service on D-Link DIR-823G routers by sending crafted input to the SetWLanRadioSecurity function.

- **Severity:** High 7.5 (`CVSS:3.1/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:** 5 Oct 2023
- **Updated:** 19 Sep 2024
- **Also known as:** GHSA-qccj-536p-x9c6

## What is CVE-2023-44839?

CVE-2023-44839 is a high-severity memory corruption vulnerability in Dlink Dir-823g Firmware, published on 5 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

D-Link DIR-823G A1V1.0.2B05 was discovered to contain a buffer overflow via the Encryption parameter in the SetWLanRadioSecurity function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2023-44839?

It affects 1 product.


Products: Dlink Dir-823g Firmware.

## How do I fix CVE-2023-44839?

No fix has been published for CVE-2023-44839 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-44839 being exploited?

There is no known exploitation of CVE-2023-44839 in the wild and no public exploit code.

## Other vulnerabilities in Dlink Dir-823g Firmware

- [CVE-2023-43235](https://insights.sbomify.com/CVE-2023-43235/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-43241](https://insights.sbomify.com/CVE-2023-43241/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-26612](https://insights.sbomify.com/CVE-2023-26612/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-26613](https://insights.sbomify.com/CVE-2023-26613/): Command injection in n/a (critical 9.8)
- [CVE-2023-26616](https://insights.sbomify.com/CVE-2023-26616/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-44839 and fix it if it is affected.

What it is: CVE-2023-44839 is a high-severity memory corruption vulnerability in Dlink Dir-823g Firmware, published on 5 Oct 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-2023-44839 in the wild and no public exploit code.

Affected product: Dlink Dir-823g Firmware. 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-2023-44839/ (Markdown: https://insights.sbomify.com/CVE-2023-44839/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-44839
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-44839
- OSV: https://osv.dev/vulnerability/CVE-2023-44839

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-44839/
Summaries are generated and may contain mistakes; the official description above is the record.