# CVE-2021-4047: The release of OpenShift 4.9.6 included four CVE fixes for the haproxy package, however the patch for CVE-2021-39242 was missing.


- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 11 Apr 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-v3g6-gh83-x752, RHSA-2021:5002

## What is CVE-2021-4047?

CVE-2021-4047 is a high-severity vulnerability in Redhat Openshift, published on 11 Apr 2022. 

### Official description

The release of OpenShift 4.9.6 included four CVE fixes for the haproxy package, however the patch for CVE-2021-39242 was missing. This issue only affects Red Hat OpenShift 4.9.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-4047?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `haproxy` | Red Hat:openshift:4.9::el8 | All versions | 0:2.2.15-3.el8 |
| `haproxy-debugsource` | Red Hat:openshift:4.9::el8 | All versions | 0:2.2.15-3.el8 |

Products: Redhat Openshift.

## How do I fix CVE-2021-4047?

Upgrade to a fixed version.

## Is CVE-2021-4047 being exploited?

There is no known exploitation of CVE-2021-4047 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Openshift

- [CVE-2014-3496](https://insights.sbomify.com/CVE-2014-3496/): Command injection in n/a (critical 10.0)
- [CVE-2014-0234](https://insights.sbomify.com/CVE-2014-0234/): Hardcoded credentials in Red Hat OpenShift Enterprise (critical 9.8)
- [CVE-2013-2060](https://insights.sbomify.com/CVE-2013-2060/): Command injection in OpenShift Origin (critical 9.8)
- [CVE-2013-4561](https://insights.sbomify.com/CVE-2013-4561/): Path traversal in openshift-origin-msg-node-mcollective (critical 9.1)
- [CVE-2014-0163](https://insights.sbomify.com/CVE-2014-0163/): Command injection in Openshift (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4047 and fix it if it is affected.

What it is: CVE-2021-4047 is a high-severity vulnerability in Redhat Openshift, published on 11 Apr 2022. 
Exploitation: There is no known exploitation of CVE-2021-4047 in the wild and no public exploit code.

Affected product: Redhat Openshift. 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-2021-4047/ (Markdown: https://insights.sbomify.com/CVE-2021-4047/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4047
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4047
- OSV: https://osv.dev/vulnerability/CVE-2021-4047

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-4047/
Summaries are generated and may contain mistakes; the official description above is the record.