# CVE-2020-27752: Memory corruption in ImageMagick

> An attacker can cause a heap buffer overflow in ImageMagick via a crafted file, leading to application crash or data integrity issues.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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:** 8 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2020-27752, GHSA-8h84-r7fq-5pcm, JLSEC-2026-850, UBUNTU-CVE-2020-27752

## What is CVE-2020-27752?

CVE-2020-27752 is a high-severity memory corruption vulnerability in Imagemagick Imagemagick, published on 8 Dec 2020. 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

A flaw was found in ImageMagick in MagickCore/quantum-private.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger a heap buffer overflow. This would most likely lead to an impact to application availability, but could potentially lead to an impact to data integrity as well. This flaw affects ImageMagick versions prior to 7.0.9-0.

Weakness: CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2020-27752?

It affects 1 product.


Products: Imagemagick Imagemagick.

## How do I fix CVE-2020-27752?

Upgrade to a fixed version.

## Is CVE-2020-27752 being exploited?

There is no known exploitation of CVE-2020-27752 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-2020-27752 and fix it if it is affected.

What it is: CVE-2020-27752 is a high-severity memory corruption vulnerability in Imagemagick Imagemagick, published on 8 Dec 2020. 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-2020-27752 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-2020-27752/ (Markdown: https://insights.sbomify.com/CVE-2020-27752/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-27752
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-27752
- OSV: https://osv.dev/vulnerability/CVE-2020-27752

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-27752/
Summaries are generated and may contain mistakes; the official description above is the record.