# CVE-2017-13658: Null dereference in n/a

> A missing NULL check in ImageMagick allows attackers to cause a denial of service via crafted MAT images, requiring an upgrade to fix.

- **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:** 24 Aug 2017
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-13658, GHSA-6m75-6pmc-2r2r

## What is CVE-2017-13658?

CVE-2017-13658 is a medium-severity vulnerability in Imagemagick Imagemagick, published on 24 Aug 2017. 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

In ImageMagick before 6.9.9-3 and 7.x before 7.0.6-3, there is a missing NULL check in the ReadMATImage function in coders/mat.c, leading to a denial of service (assertion failure and application exit) in the DestroyImageInfo function in MagickCore/image.c.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2017-13658?

It affects 1 product.


Products: Imagemagick Imagemagick.

## How do I fix CVE-2017-13658?

Upgrade to a fixed version.

## Is CVE-2017-13658 being exploited?

There is no known exploitation of CVE-2017-13658 in the wild and no public exploit code.

## Other vulnerabilities in Imagemagick Imagemagick

- [CVE-2019-19952](https://insights.sbomify.com/CVE-2019-19952/): Use after free in n/a (critical 9.8)
- [CVE-2018-16328](https://insights.sbomify.com/CVE-2018-16328/): Null dereference in n/a (critical 9.8)
- [CVE-2018-16329](https://insights.sbomify.com/CVE-2018-16329/): Null dereference in n/a (critical 9.8)
- [CVE-2017-18210](https://insights.sbomify.com/CVE-2017-18210/): Null dereference in n/a (critical 9.8)
- [CVE-2017-14138](https://insights.sbomify.com/CVE-2017-14138/): Denial of service in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-13658 and fix it if it is affected.

What it is: CVE-2017-13658 is a medium-severity vulnerability in Imagemagick Imagemagick, published on 24 Aug 2017. 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-2017-13658 in the wild and no public exploit code.

Affected product: Imagemagick Imagemagick. 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-2017-13658/ (Markdown: https://insights.sbomify.com/CVE-2017-13658/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-13658
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-13658
- OSV: https://osv.dev/vulnerability/CVE-2017-13658

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-13658/
Summaries are generated and may contain mistakes; the official description above is the record.