# CVE-2022-28614: read beyond bounds via ap_rwrite()

> An attacker can read unintended memory by causing the server to reflect very large input via ap_rwrite or ap_rputs functions.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 8 Jun 2022
- **Updated:** 3 Aug 2024
- **Also known as:** ALPINE-CVE-2022-28614, BIT-apache-2022-28614, CLEANSTART-2026-FF62100, CLSA-2022-1663173256, CLSA-2022-1663184687, CLSA-2022-1663591920, CLSA-2022-1663592078, DEBIAN-CVE-2022-28614, GHSA-r4hp-h998-37fc

## What is CVE-2022-28614?

CVE-2022-28614 is a medium-severity vulnerability in Apache Http Server, published on 8 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an attacker can cause the server to reflect very large input using ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use the 'ap_rputs' function and may pass it a very large (INT_MAX or larger) string must be compiled against current headers to resolve the issue.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2022-28614?

1 open source package ship an affected version, including apache. It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `apache` | Bitnami | All versions | 2.4.54 |

Products: Apache Http Server, Fedoraproject Fedora, Netapp Clustered Data Ontap.

## How do I fix CVE-2022-28614?

Upgrade apache to 2.4.54 or later.

## Is CVE-2022-28614 being exploited?

There is no known exploitation of CVE-2022-28614 in the wild and no public exploit code.

## Other vulnerabilities in Apache Http Server

- [CVE-2021-42013](https://insights.sbomify.com/CVE-2021-42013/): Apache HTTP Server Path Traversal (critical 9.8, exploited in the wild)
- [CVE-2024-38475](https://insights.sbomify.com/CVE-2024-38475/): Apache HTTP Server Improper Escaping of Output (critical 9.1, exploited in the wild)
- [CVE-2021-40438](https://insights.sbomify.com/CVE-2021-40438/): Apache HTTP Server-Side Request Forgery (SSRF) (critical 9.0, exploited in the wild)
- [CVE-2019-0211](https://insights.sbomify.com/CVE-2019-0211/): Apache HTTP Server Privilege Escalation (high 7.8, exploited in the wild)
- [CVE-2021-41773](https://insights.sbomify.com/CVE-2021-41773/): Apache HTTP Server Path Traversal (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-28614 and fix it if it is affected.

What it is: CVE-2022-28614 is a medium-severity vulnerability in Apache Http Server, published on 8 Jun 2022. 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-2022-28614 in the wild and no public exploit code.

Affected packages and fixed versions:
- apache (Bitnami): affected all versions; fixed in 2.4.54

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-2022-28614/ (Markdown: https://insights.sbomify.com/CVE-2022-28614/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-28614
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-28614
- OSV: https://osv.dev/vulnerability/CVE-2022-28614

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-28614/
Summaries are generated and may contain mistakes; the official description above is the record.