# CVE-2018-15715: Missing authorization in Zoom

> Remote attackers can spoof UDP messages to remove attendees, spoof messages, or hijack shared screens in Zoom clients.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Nov 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-gf85-hm2v-6785

## What is CVE-2018-15715?

CVE-2018-15715 is a critical missing authorization vulnerability in Zoom Zoom, published on 30 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Zoom clients on Windows (before version 4.1.34814.1119), Mac OS (before version 4.1.34801.1116), and Linux (2.4.129780.0915 and below) are vulnerable to unauthorized message processing. A remote unauthenticated attacker can spoof UDP messages from a meeting attendee or Zoom server in order to invoke functionality in the target client. This allows the attacker to remove attendees from meetings, spoof messages from users, or hijack shared screens.

Weakness: CWE-20 (Improper Input Validation), CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2018-15715?

It affects 1 product.


Products: Zoom Zoom.

## How do I fix CVE-2018-15715?

No fix has been published for CVE-2018-15715 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-15715 being exploited?

There is no known exploitation of CVE-2018-15715 in the wild and no public exploit code.

## Other vulnerabilities in Zoom Zoom

- [CVE-2023-39216](https://insights.sbomify.com/CVE-2023-39216/): Cross-site scripting in Zoom Desktop Client for Windows (critical 9.6)
- [CVE-2023-36534](https://insights.sbomify.com/CVE-2023-36534/): Path traversal in Zoom Desktop Client for Windows (critical 9.3)
- [CVE-2019-13567](https://insights.sbomify.com/CVE-2019-13567/): Command injection in n/a (high 8.8)
- [CVE-2017-15048](https://insights.sbomify.com/CVE-2017-15048/): Memory corruption in n/a (high 8.8)
- [CVE-2017-15049](https://insights.sbomify.com/CVE-2017-15049/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15715 and fix it if it is affected.

What it is: CVE-2018-15715 is a critical missing authorization vulnerability in Zoom Zoom, published on 30 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-15715 in the wild and no public exploit code.

Affected product: Zoom Zoom. 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-2018-15715/ (Markdown: https://insights.sbomify.com/CVE-2018-15715/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15715
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15715
- OSV: https://osv.dev/vulnerability/CVE-2018-15715

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-15715/
Summaries are generated and may contain mistakes; the official description above is the record.