# CVE-2020-11758: Memory corruption in n/a

> An out-of-bounds read in OpenEXR allows attackers to cause denial of service or disclose sensitive information via crafted image files.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 14 Apr 2020
- **Updated:** 4 Aug 2024
- **Also known as:** AZL-44355, DEBIAN-CVE-2020-11758, GHSA-46h8-9xpr-rf6w, UBUNTU-CVE-2020-11758

## What is CVE-2020-11758?

CVE-2020-11758 is a medium-severity memory corruption vulnerability in Apple Icloud, published on 14 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

An issue was discovered in OpenEXR before 2.4.1. There is an out-of-bounds read in ImfOptimizedPixelReading.h.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2020-11758?

It affects 12 products.


Products: Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Itunes, Apple Mac Os X, Apple Tvos, Apple Watchos, Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Openexr Openexr, Opensuse Leap.

## How do I fix CVE-2020-11758?

Upgrade to a fixed version.

## Is CVE-2020-11758 being exploited?

There is no known exploitation of CVE-2020-11758 in the wild and no public exploit code.

## Other vulnerabilities in Apple Icloud

- [CVE-2019-8506](https://insights.sbomify.com/CVE-2019-8506/): Apple Multiple Products Type Confusion (high 8.8, exploited in the wild)
- [CVE-2020-27932](https://insights.sbomify.com/CVE-2020-27932/): Apple Multiple Products Type Confusion (high 7.8, exploited in the wild)
- [CVE-2019-8746](https://insights.sbomify.com/CVE-2019-8746/): Memory corruption in iOS (critical 9.8)
- [CVE-2019-8749](https://insights.sbomify.com/CVE-2019-8749/): Memory corruption in iOS (critical 9.8)
- [CVE-2019-8756](https://insights.sbomify.com/CVE-2019-8756/): Memory corruption in iOS (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-11758 and fix it if it is affected.

What it is: CVE-2020-11758 is a medium-severity memory corruption vulnerability in Apple Icloud, published on 14 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-11758 in the wild and no public exploit code.

Affected product: Apple Icloud. 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-2020-11758/ (Markdown: https://insights.sbomify.com/CVE-2020-11758/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-11758
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-11758
- OSV: https://osv.dev/vulnerability/CVE-2020-11758

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-11758/
Summaries are generated and may contain mistakes; the official description above is the record.