# CVE-2023-41206: D-Link DAP-1325 SetHostIPv6Settings IPv6Mode Stack-based Buffer Overflow Remote Code Execution Vulnerability

> Network-adjacent attackers can execute arbitrary code as root on D-Link DAP-1325 routers via a stack-based buffer overflow in the HNAP1 SOAP endpoint.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/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:** 3 May 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-9g76-c57m-qm46

## What is CVE-2023-41206?

CVE-2023-41206 is a high-severity memory corruption vulnerability in D-Link DAP-1325, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

D-Link DAP-1325 SetHostIPv6Settings IPv6Mode Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1325 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of XML data provided to the HNAP1 SOAP endpoint. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-18832.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2023-41206?

It affects 1 product.


Products: Dlink Dap-1325 Firmware.

## How do I fix CVE-2023-41206?

No fix has been published for CVE-2023-41206 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-41206 being exploited?

There is no known exploitation of CVE-2023-41206 in the wild and no public exploit code.

## Other vulnerabilities in D-Link DAP-1325

- [CVE-2023-41187](https://insights.sbomify.com/CVE-2023-41187/): D-Link DAP-1325 HNAP Missing Authentication Remote Code Execution Vulnerability (high 8.8)
- [CVE-2023-41188](https://insights.sbomify.com/CVE-2023-41188/): D-Link DAP-1325 HNAP SetAPLanSettings DeviceName Command Injection Remote Code Execution Vulnerability (high 8.8)
- [CVE-2023-41189](https://insights.sbomify.com/CVE-2023-41189/): D-Link DAP-1325 HNAP SetAPLanSettings Gateway Command Injection Remote Code Execution Vulnerability (high 8.8)
- [CVE-2023-41190](https://insights.sbomify.com/CVE-2023-41190/): D-Link DAP-1325 HNAP SetAPLanSettings IPAddr Command Injection Remote Code Execution Vulnerability (high 8.8)
- [CVE-2023-41191](https://insights.sbomify.com/CVE-2023-41191/): D-Link DAP-1325 HNAP SetAPLanSettings Mode Command Injection Remote Code Execution Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-41206 and fix it if it is affected.

What it is: CVE-2023-41206 is a high-severity memory corruption vulnerability in D-Link DAP-1325, published on 3 May 2024. 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-2023-41206 in the wild and no public exploit code.

Affected product: D-Link DAP-1325. 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-2023-41206/ (Markdown: https://insights.sbomify.com/CVE-2023-41206/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-41206
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-41206
- OSV: https://osv.dev/vulnerability/CVE-2023-41206

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-41206/
Summaries are generated and may contain mistakes; the official description above is the record.