# CVE-2022-28331: Apache Portable Runtime (APR): Windows out-of-bounds write in apr_socket_sendv function

> An integer overflow in the APR library on Windows allows out-of-bounds writes, potentially enabling remote code execution.

- **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:** 31 Jan 2023
- **Updated:** 27 Mar 2025
- **Also known as:** ALPINE-CVE-2022-28331, BIT-apr-2022-28331, GHSA-27j5-c395-8j82

## What is CVE-2022-28331?

CVE-2022-28331 is a critical vulnerability in Apache Portable Runtime (APR), published on 31 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

On Windows, Apache Portable Runtime 1.7.0 and earlier may write beyond the end of a stack based buffer in apr_socket_sendv(). This is a result of integer overflow.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2022-28331?

1 open source package ship an affected version, including apr. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `apr` | Bitnami | All versions | 1.7.1 |

Products: Apache Portable Runtime.

## How do I fix CVE-2022-28331?

Upgrade apr to 1.7.1 or later.

## Is CVE-2022-28331 being exploited?

There is no known exploitation of CVE-2022-28331 in the wild and no public exploit code.

## Other vulnerabilities in Apache Portable Runtime (APR)

- [CVE-2022-24963](https://insights.sbomify.com/CVE-2022-24963/): Apache Portable Runtime (APR): out-of-bound writes in the apr_encode family of functions (critical 9.8)
- [CVE-2021-35940](https://insights.sbomify.com/CVE-2021-35940/): Regression of CVE-2017-12613 (high 7.1)
- [CVE-2017-12613](https://insights.sbomify.com/CVE-2017-12613/): Information disclosure in Apache Portable Runtime (high 7.1)
- [CVE-2023-49582](https://insights.sbomify.com/CVE-2023-49582/): Apache Portable Runtime (APR): Unexpected lax shared memory permissions (medium 5.5)
- [CVE-2012-0840](https://insights.sbomify.com/CVE-2012-0840/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-28331 and fix it if it is affected.

What it is: CVE-2022-28331 is a critical vulnerability in Apache Portable Runtime (APR), published on 31 Jan 2023. 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-2022-28331 in the wild and no public exploit code.

Affected packages and fixed versions:
- apr (Bitnami): affected all versions; fixed in 1.7.1

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-2022-28331/ (Markdown: https://insights.sbomify.com/CVE-2022-28331/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-28331
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-28331
- OSV: https://osv.dev/vulnerability/CVE-2022-28331

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-28331/
Summaries are generated and may contain mistakes; the official description above is the record.