# CVE-2021-3101: Hotdog Container Escape

> Attackers can escape Hotdog containers to gain full host privileges by bypassing SELinux and capability restrictions.

- **Severity:** High 8.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Apr 2022
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-qfhv-c5cc-mhgp

## What is CVE-2021-3101?

CVE-2021-3101 is a high-severity vulnerability in Amazon Web Services Hotdog, published on 19 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Hotdog, prior to v1.0.1, did not mimic the capabilities or the SELinux label of the target JVM process. This would allow a container to gain full privileges on the host, bypassing restrictions set on the container.

Weakness: CWE-269 (Improper Privilege Management), CWE-250 (Execution with Unnecessary Privileges)

## Which versions are affected by CVE-2021-3101?

It affects 1 product.


Products: Hotdog Project Hotdog.

## How do I fix CVE-2021-3101?

No fix has been published for CVE-2021-3101 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3101 being exploited?

There is no known exploitation of CVE-2021-3101 in the wild and no public exploit code.

## Other vulnerabilities in Amazon Web Services Hotdog

- [CVE-2022-0071](https://insights.sbomify.com/CVE-2022-0071/): Hotdog Container Escape (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3101 and fix it if it is affected.

What it is: CVE-2021-3101 is a high-severity vulnerability in Amazon Web Services Hotdog, published on 19 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-3101 in the wild and no public exploit code.

Affected product: Amazon Web Services Hotdog. 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-2021-3101/ (Markdown: https://insights.sbomify.com/CVE-2021-3101/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3101
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3101
- OSV: https://osv.dev/vulnerability/CVE-2021-3101

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3101/
Summaries are generated and may contain mistakes; the official description above is the record.