# CVE-2021-32090: Command injection in LocalStack

> Attackers can execute arbitrary shell commands via the functionName parameter in the LocalStack dashboard component.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** Yes
- **Published:** 7 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-hpr6-f4vq-mxch, PYSEC-2021-101

## What is CVE-2021-32090?

CVE-2021-32090 is a critical command injection vulnerability in n/a, published on 7 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The dashboard component of StackLift LocalStack 0.12.6 allows attackers to inject arbitrary shell commands via the functionName parameter.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2021-32090?

3 open source packages ship an affected version, including localstack. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `localstack` | PyPI | All versions | 0.12.10 |
| `localstack` | PyPI | All versions | 0.12.10 |
| `localstack` | PyPI | All versions | 0.12.6.1 |

Products: Localstack Localstack.

## How do I fix CVE-2021-32090?

Upgrade localstack to a fixed version for your release line: 0.12.10 or 0.12.6.1.

## Is CVE-2021-32090 being exploited?

There is no known exploitation of CVE-2021-32090 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-48054](https://insights.sbomify.com/CVE-2023-48054/): Missing SSL certificate validation in localstack (high 7.4)
- [CVE-2021-32091](https://insights.sbomify.com/CVE-2021-32091/): Cross-site scripting in LocalStack (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32090 and fix it if it is affected.

What it is: CVE-2021-32090 is a critical command injection vulnerability in n/a, published on 7 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-32090 in the wild and no public exploit code.

Affected packages and fixed versions:
- localstack (PyPI): affected all versions; fixed in 0.12.10
- localstack (PyPI): affected all versions; fixed in 0.12.10
- localstack (PyPI): affected all versions; fixed in 0.12.6.1

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-2021-32090/ (Markdown: https://insights.sbomify.com/CVE-2021-32090/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32090
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32090
- OSV: https://osv.dev/vulnerability/CVE-2021-32090

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32090/
Summaries are generated and may contain mistakes; the official description above is the record.