# CVE-2013-1846: Null dereference in n/a

> Remote authenticated users can crash the Subversion Apache module via a crafted LOCK request, causing denial of service.

- **Severity:** Medium 4.0 (`AV:N/AC:L/Au:S/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 2 May 2013
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2013-1846, GHSA-mv22-f57f-6934

## What is CVE-2013-1846?

CVE-2013-1846 is a medium-severity vulnerability in Opensuse Opensuse, published on 2 May 2013. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The mod_dav_svn Apache HTTPD server module in Subversion 1.6.x before 1.6.21 and 1.7.0 through 1.7.8 allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) via a LOCK on an activity URL.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2013-1846?

It affects 2 products.


Products: Apache Subversion, Opensuse Opensuse.

## How do I fix CVE-2013-1846?

Upgrade to a fixed version.

## Is CVE-2013-1846 being exploited?

There is no known exploitation of CVE-2013-1846 in the wild and no public exploit code.

## Other vulnerabilities in Opensuse Opensuse

- [CVE-2017-9800](https://insights.sbomify.com/CVE-2017-9800/): A maliciously constructed svn+ssh:// URL would cause Subversion clients before 1.8.19, 1.9.x before 1.9.7, and 1.10.0.x through 1.10.0-alpha (critical 9.8)
- [CVE-2013-4246](https://insights.sbomify.com/CVE-2013-4246/): Denial of service in n/a (high 8.8)
- [CVE-2015-5259](https://insights.sbomify.com/CVE-2015-5259/): Integer overflow in n/a (high 8.6)
- [CVE-2024-45720](https://insights.sbomify.com/CVE-2024-45720/): Apache Subversion: Command line argument injection on Windows platforms (high 8.2)
- [CVE-2015-0202](https://insights.sbomify.com/CVE-2015-0202/): Denial of service in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-1846 and fix it if it is affected.

What it is: CVE-2013-1846 is a medium-severity vulnerability in Opensuse Opensuse, published on 2 May 2013. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2013-1846 in the wild and no public exploit code.

Affected product: Opensuse Opensuse. 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-2013-1846/ (Markdown: https://insights.sbomify.com/CVE-2013-1846/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-1846
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-1846
- OSV: https://osv.dev/vulnerability/CVE-2013-1846

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From sbomify Insights: https://insights.sbomify.com/CVE-2013-1846/
Summaries are generated and may contain mistakes; the official description above is the record.