# CVE-2019-1000016: Denial of service in n/a

> A specially crafted AV1 file can cause a denial of service in FFmpeg due to improper array index validation.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **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:** Yes
- **Published:** 4 Feb 2019
- **Updated:** 5 Aug 2024
- **Also known as:** CLEANSTART-2024-DU40050, DEBIAN-CVE-2019-1000016, GHSA-hc9w-x35j-3w9c, JLSEC-2025-101

## What is CVE-2019-1000016?

CVE-2019-1000016 is a medium-severity denial of service vulnerability in Ffmpeg Ffmpeg, published on 4 Feb 2019. 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

FFMPEG version 4.1 contains a CWE-129: Improper Validation of Array Index vulnerability in libavcodec/cbs_av1.c that can result in Denial of service. This attack appears to be exploitable via specially crafted AV1 file has to be provided as input. This vulnerability appears to have been fixed in after commit b97a4b658814b2de8b9f2a3bce491c002d34de31.

Weakness: CWE-129 (Improper Validation of Array Index)

## Which versions are affected by CVE-2019-1000016?

It affects 1 product.


Products: Ffmpeg Ffmpeg.

## How do I fix CVE-2019-1000016?

Apply the vendor's patch.

## Is CVE-2019-1000016 being exploited?

There is no known exploitation of CVE-2019-1000016 in the wild and no public exploit code.

## Other vulnerabilities in Ffmpeg Ffmpeg

- [CVE-2013-0864](https://insights.sbomify.com/CVE-2013-0864/): Memory corruption in n/a (critical 10.0)
- [CVE-2013-0872](https://insights.sbomify.com/CVE-2013-0872/): Memory corruption in n/a (critical 10.0)
- [CVE-2013-0873](https://insights.sbomify.com/CVE-2013-0873/): Memory corruption in n/a (critical 10.0)
- [CVE-2013-4265](https://insights.sbomify.com/CVE-2013-4265/): Null dereference in n/a (critical 10.0)
- [CVE-2011-3937](https://insights.sbomify.com/CVE-2011-3937/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1000016 and fix it if it is affected.

What it is: CVE-2019-1000016 is a medium-severity denial of service vulnerability in Ffmpeg Ffmpeg, published on 4 Feb 2019. 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-2019-1000016 in the wild and no public exploit code.

Affected product: Ffmpeg Ffmpeg. 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-2019-1000016/ (Markdown: https://insights.sbomify.com/CVE-2019-1000016/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1000016
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1000016
- OSV: https://osv.dev/vulnerability/CVE-2019-1000016

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-1000016/
Summaries are generated and may contain mistakes; the official description above is the record.