# CVE-2012-0031: Memory corruption in n/a

> Local attackers can crash the Apache HTTP Server daemon during shutdown by corrupting shared memory, causing a denial of service.

- **Severity:** Medium 4.6 (`AV:L/AC:L/Au:N/C:P/I:P/A:P`)
- **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:** Yes
- **Published:** 18 Jan 2012
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2012-0031, GHSA-9mf5-9fjr-xvhw

## What is CVE-2012-0031?

CVE-2012-0031 is a medium-severity memory corruption vulnerability in Apache Http Server, published on 18 Jan 2012. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

scoreboard.c in the Apache HTTP Server 2.2.21 and earlier might allow local users to cause a denial of service (daemon crash during shutdown) or possibly have unspecified other impact by modifying a certain type field within a scoreboard shared memory segment, leading to an invalid call to the free function.

## Which versions are affected by CVE-2012-0031?

It affects 12 products.


Products: Apache Http Server, Debian Debian Linux, Opensuse Opensuse, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Workstation, Redhat Jboss Enterprise Web Server, Redhat Storage, Suse Linux Enterprise Server, Suse Linux Enterprise Software Development Kit.

## How do I fix CVE-2012-0031?

Upgrade to a fixed version.

## Is CVE-2012-0031 being exploited?

There is no known exploitation of CVE-2012-0031 in the wild and no public exploit code.

Public exploit code:

- Apache 2.2 - Scoreboard Invalid Free On Shutdown (exploitdb)

## 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-2012-0031 and fix it if it is affected.

What it is: CVE-2012-0031 is a medium-severity memory corruption vulnerability in Apache Http Server, published on 18 Jan 2012. 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-2012-0031 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-2012-0031/ (Markdown: https://insights.sbomify.com/CVE-2012-0031/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-0031
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-0031
- OSV: https://osv.dev/vulnerability/CVE-2012-0031

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-0031/
Summaries are generated and may contain mistakes; the official description above is the record.