# CVE-2023-39199: Weak cryptography in Zoom Clients

> A privileged user can exploit cryptographic flaws in Zoom's in-meeting chat to disclose information via network access.

- **Severity:** Medium 4.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Nov 2023
- **Updated:** 19 Sep 2024
- **Also known as:** GHSA-cw6w-5w44-ccrq

## What is CVE-2023-39199?

CVE-2023-39199 is a medium-severity vulnerability in Zoom Rooms, published on 14 Nov 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Cryptographic issues with In-Meeting Chat for some Zoom clients may allow a privileged user to conduct an information disclosure via network access.

Weakness: CWE-325 (Missing Cryptographic Step)

## Which versions are affected by CVE-2023-39199?

It affects 4 products.


Products: Zoom Meetings, Zoom Rooms, Zoom Virtual Desktop Infrastructure, Zoom Zoom.

## How do I fix CVE-2023-39199?

No fix has been published for CVE-2023-39199 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-39199 being exploited?

There is no known exploitation of CVE-2023-39199 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-2023-39199 and fix it if it is affected.

What it is: CVE-2023-39199 is a medium-severity vulnerability in Zoom Rooms, published on 14 Nov 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-39199 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-2023-39199/ (Markdown: https://insights.sbomify.com/CVE-2023-39199/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39199
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39199
- OSV: https://osv.dev/vulnerability/CVE-2023-39199

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-39199/
Summaries are generated and may contain mistakes; the official description above is the record.