# CVE-2023-27352: Use after free in One Speaker

> Network-adjacent attackers can execute arbitrary code as root on Sonos One speakers via a use-after-free flaw in SMB processing.

- **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:** 20 Apr 2023
- **Updated:** 5 Feb 2025
- **Also known as:** GHSA-6pq8-4f7j-wcw6

## What is CVE-2023-27352?

CVE-2023-27352 is a high-severity use after free vulnerability in Sonos One Speaker, published on 20 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sonos One Speaker 70.3-35220. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of the SMB directory query command. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-19845.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2023-27352?

It affects 3 products.


Products: Sonos One Firmware, Sonos S1, Sonos S2.

## How do I fix CVE-2023-27352?

No fix has been published for CVE-2023-27352 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-27352 being exploited?

There is no known exploitation of CVE-2023-27352 in the wild and no public exploit code.

## Other vulnerabilities in Sonos One Speaker

- [CVE-2023-27355](https://insights.sbomify.com/CVE-2023-27355/): Memory corruption in One Speaker (high 8.8)
- [CVE-2020-9285](https://insights.sbomify.com/CVE-2020-9285/): Other in n/a (medium 6.8)
- [CVE-2023-27353](https://insights.sbomify.com/CVE-2023-27353/): Information disclosure in One Speaker (medium 5.4)
- [CVE-2023-27354](https://insights.sbomify.com/CVE-2023-27354/): Integer overflow in One Speaker (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27352 and fix it if it is affected.

What it is: CVE-2023-27352 is a high-severity use after free vulnerability in Sonos One Speaker, published on 20 Apr 2023. 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-2023-27352 in the wild and no public exploit code.

Affected product: Sonos One Speaker. 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-2023-27352/ (Markdown: https://insights.sbomify.com/CVE-2023-27352/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27352
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27352
- OSV: https://osv.dev/vulnerability/CVE-2023-27352

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-27352/
Summaries are generated and may contain mistakes; the official description above is the record.