# CVE-2019-10097: Memory corruption in Apache HTTP Server

> A stack buffer overflow or NULL pointer dereference in Apache HTTP Server allows denial of service or code execution when mod_remoteip is configured with a trusted proxy.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Sep 2019
- **Updated:** 4 Aug 2024
- **Also known as:** ALPINE-CVE-2019-10097, CLEANSTART-2026-QW58574, DEBIAN-CVE-2019-10097, GHSA-x7xg-9vq9-q8xh

## What is CVE-2019-10097?

CVE-2019-10097 is a high-severity memory corruption vulnerability in Apache Http Server, published on 26 Sep 2019. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients.

Weakness: CWE-787 (Out-of-bounds Write), CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2019-10097?

It affects 8 products.


Products: Apache Http Server, Oracle Communications Element Manager, Oracle Communications Session Report Manager, Oracle Communications Session Route Manager, Oracle Enterprise Manager Ops Center, Oracle Http Server, Oracle Instantis Enterprisetrack, Oracle Retail Xstore Point of Service.

## How do I fix CVE-2019-10097?

Upgrade to a fixed version.

## Is CVE-2019-10097 being exploited?

There is no known exploitation of CVE-2019-10097 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-2019-10097 and fix it if it is affected.

What it is: CVE-2019-10097 is a high-severity memory corruption vulnerability in Apache Http Server, published on 26 Sep 2019. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-10097 in the wild and no public exploit code.

Affected product: Apache Http Server. 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-2019-10097/ (Markdown: https://insights.sbomify.com/CVE-2019-10097/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10097
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10097
- OSV: https://osv.dev/vulnerability/CVE-2019-10097

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-10097/
Summaries are generated and may contain mistakes; the official description above is the record.