# CVE-2020-6116: Memory corruption in Nitro Pro

> Arbitrary code execution via memory corruption in Nitro Pro when rendering crafted documents with indexed colorspaces.

- **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:** 17 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qc5m-fq47-qgpw

## What is CVE-2020-6116?

CVE-2020-6116 is a high-severity memory corruption vulnerability in Nitro Pro, published on 17 Sep 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

An arbitrary code execution vulnerability exists in the rendering functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242. When drawing the contents of a page using colors from an indexed colorspace, the application can miscalculate the size of a buffer when allocating space for its colors. When using this allocated buffer, the application can write outside its bounds and cause memory corruption which can lead to code execution. A specially crafted document must be loaded by a victim in order to trigger this vulnerability.

Weakness: CWE-787 (Out-of-bounds Write), CWE-190 (Integer Overflow or Wraparound), CWE-131 (Incorrect Calculation of Buffer Size), CWE-680 (Integer Overflow to Buffer Overflow)

## Which versions are affected by CVE-2020-6116?

It affects 1 product.


Products: Gonitro Nitro Pro.

## How do I fix CVE-2020-6116?

No fix has been published for CVE-2020-6116 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-6116 being exploited?

There is no known exploitation of CVE-2020-6116 in the wild and no public exploit code.

## Other vulnerabilities in Nitro Pro

- [CVE-2021-21796](https://insights.sbomify.com/CVE-2021-21796/): Use after free in Nitro Pro (high 8.8)
- [CVE-2021-21797](https://insights.sbomify.com/CVE-2021-21797/): Use after free in Nitro Pro (high 8.8)
- [CVE-2021-21798](https://insights.sbomify.com/CVE-2021-21798/): Use after free in Nitro Pro (high 8.8)
- [CVE-2020-6112](https://insights.sbomify.com/CVE-2020-6112/): Memory corruption in Nitro Pro (high 8.8)
- [CVE-2020-6113](https://insights.sbomify.com/CVE-2020-6113/): Integer overflow in Nitro Pro (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-6116 and fix it if it is affected.

What it is: CVE-2020-6116 is a high-severity memory corruption vulnerability in Nitro Pro, published on 17 Sep 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-2020-6116 in the wild and no public exploit code.

Affected product: Nitro Pro. 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-2020-6116/ (Markdown: https://insights.sbomify.com/CVE-2020-6116/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-6116
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-6116
- OSV: https://osv.dev/vulnerability/CVE-2020-6116

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-6116/
Summaries are generated and may contain mistakes; the official description above is the record.