# CVE-2018-14448: Null dereference in n/a

> A crafted MP4 file causes a NULL pointer dereference in Untrunc, leading to application crash and denial of service.

- **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:** No
- **Published:** 20 Jul 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-m22q-3q22-f884

## What is CVE-2018-14448?

CVE-2018-14448 is a medium-severity vulnerability in n/a, published on 20 Jul 2018. 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

Codec::parse in track.cpp in Untrunc through 2018-06-07 has a NULL pointer dereference via a crafted MP4 file because of improper interaction with libav.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2018-14448?

It affects 1 product.


Products: Untrunc Project Untrunc.

## How do I fix CVE-2018-14448?

No fix has been published for CVE-2018-14448 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-14448 being exploited?

There is no known exploitation of CVE-2018-14448 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-14448 and fix it if it is affected.

What it is: CVE-2018-14448 is a medium-severity vulnerability in n/a, published on 20 Jul 2018. 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-2018-14448 in the wild and no public exploit code.

Affected product: n/a. 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-2018-14448/ (Markdown: https://insights.sbomify.com/CVE-2018-14448/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-14448
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-14448
- OSV: https://osv.dev/vulnerability/CVE-2018-14448

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-14448/
Summaries are generated and may contain mistakes; the official description above is the record.