# CVE-2023-6580: D-Link DIR-846 QoS POST deserialization

> Remote attackers can exploit unsafe deserialization in the QoS handler of D-Link DIR-846 routers to execute arbitrary code.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-r2mg-8788-h74v

## What is CVE-2023-6580?

CVE-2023-6580 is a high-severity unsafe deserialization vulnerability in D-Link DIR-846, published on 7 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, was found in D-Link DIR-846 FW100A53DBR. This affects an unknown part of the file /HNAP1/ of the component QoS POST Handler. The manipulation of the argument smartqos_express_devices/smartqos_normal_devices leads to deserialization. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-247161 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2023-6580?

It affects 1 product.


Products: Dlink Dir-846 Firmware.

## How do I fix CVE-2023-6580?

No fix has been published for CVE-2023-6580 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-6580 being exploited?

There is no known exploitation of CVE-2023-6580 in the wild and no public exploit code.

## Other vulnerabilities in D-Link DIR-846

- [CVE-2022-46641](https://insights.sbomify.com/CVE-2022-46641/): Command injection in n/a (critical 9.9)
- [CVE-2022-46642](https://insights.sbomify.com/CVE-2022-46642/): Command injection in n/a (critical 9.9)
- [CVE-2023-33735](https://insights.sbomify.com/CVE-2023-33735/): Command injection in n/a (critical 9.8)
- [CVE-2020-21016](https://insights.sbomify.com/CVE-2020-21016/): Code injection in n/a (critical 9.8)
- [CVE-2021-46314](https://insights.sbomify.com/CVE-2021-46314/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6580 and fix it if it is affected.

What it is: CVE-2023-6580 is a high-severity unsafe deserialization vulnerability in D-Link DIR-846, published on 7 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-6580 in the wild and no public exploit code.

Affected product: D-Link DIR-846. 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-2023-6580/ (Markdown: https://insights.sbomify.com/CVE-2023-6580/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6580
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6580
- OSV: https://osv.dev/vulnerability/CVE-2023-6580

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-6580/
Summaries are generated and may contain mistakes; the official description above is the record.