# CVE-2018-3835: Memory corruption in Walt Disney Animation Studios PTEX

> An out-of-bounds write in the PTEX library allows attackers to execute arbitrary code via a maliciously crafted file.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Jan 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-4rvj-v4gr-jxq6

## What is CVE-2018-3835?

CVE-2018-3835 is a high-severity memory corruption vulnerability in Talos Walt Disney Animation Studios PTEX, published on 29 Jan 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

An exploitable out of bounds write vulnerability exists in version 2.2 of the Per Face Texture mapping application known as PTEX. The vulnerability is present in the reading of a file without proper parameter checking. The value read in, is not verified to be valid and its use can lead to a buffer overflow, potentially resulting in code execution.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2018-3835?

It affects 1 product.


Products: Disneyanimation Ptex.

## How do I fix CVE-2018-3835?

No fix has been published for CVE-2018-3835 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-3835 being exploited?

There is no known exploitation of CVE-2018-3835 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-3835 and fix it if it is affected.

What it is: CVE-2018-3835 is a high-severity memory corruption vulnerability in Talos Walt Disney Animation Studios PTEX, published on 29 Jan 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-2018-3835 in the wild and no public exploit code.

Affected product: Talos Walt Disney Animation Studios PTEX. 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-2018-3835/ (Markdown: https://insights.sbomify.com/CVE-2018-3835/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-3835
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-3835
- OSV: https://osv.dev/vulnerability/CVE-2018-3835

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-3835/
Summaries are generated and may contain mistakes; the official description above is the record.