# CVE-2023-39204: Memory corruption in Zoom Clients

> An unauthenticated attacker can cause a denial of service in Zoom clients via a buffer overflow triggered by network access.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Nov 2023
- **Updated:** 29 Aug 2024
- **Also known as:** GHSA-x25c-jx5r-5c87

## What is CVE-2023-39204?

CVE-2023-39204 is a medium-severity memory corruption vulnerability in Zoom Rooms, published on 14 Nov 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Buffer overflow in some Zoom clients may allow an unauthenticated user to conduct a denial of service via network access.

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

## Which versions are affected by CVE-2023-39204?

It affects 5 products.


Products: Zoom Meetings, Zoom Rooms, Zoom Video Software Development Kit, Zoom Virtual Desktop Infrastructure, Zoom Zoom.

## How do I fix CVE-2023-39204?

No fix has been published for CVE-2023-39204 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-39204 being exploited?

There is no known exploitation of CVE-2023-39204 in the wild and no public exploit code.

## Other vulnerabilities in Zoom Rooms

- [CVE-2021-33907](https://insights.sbomify.com/CVE-2021-33907/): Code injection in Zoom Client for Meetings for Windows (critical 9.8)
- [CVE-2022-28768](https://insights.sbomify.com/CVE-2022-28768/): Local Privilege Escalation in Zoom Client Installer for macOS (high 8.8)
- [CVE-2022-28763](https://insights.sbomify.com/CVE-2022-28763/): Improper URL parsing in Zoom Clients (high 8.8)
- [CVE-2022-28757](https://insights.sbomify.com/CVE-2022-28757/): Local Privilege Escalation in Auto Updater for Zoom Client for Meetings for macOS (high 8.8)
- [CVE-2022-28751](https://insights.sbomify.com/CVE-2022-28751/): Local Privilege Escalation in Zoom Client for Meetings for MacOS (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-39204 and fix it if it is affected.

What it is: CVE-2023-39204 is a medium-severity memory corruption vulnerability in Zoom Rooms, published on 14 Nov 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-39204 in the wild and no public exploit code.

Affected product: Zoom Rooms. 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-2023-39204/ (Markdown: https://insights.sbomify.com/CVE-2023-39204/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39204
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39204
- OSV: https://osv.dev/vulnerability/CVE-2023-39204

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-39204/
Summaries are generated and may contain mistakes; the official description above is the record.