# CVE-2013-0336: Denial of service in n/a

> Remote attackers can crash the FreeIPA directory server by sending a connection request without a username, causing a denial of service.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Nov 2014
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2013-0336, GHSA-q3fv-3w7q-43gw

## What is CVE-2013-0336?

CVE-2013-0336 is a medium-severity denial of service vulnerability in n/a, published on 3 Nov 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The ipapwd_chpwop function in daemons/ipa-slapi-plugins/ipa-pwd-extop/ipa_pwd_extop.c in the directory server (dirsrv) in FreeIPA before 3.2.0 allows remote attackers to cause a denial of service (crash) via a connection request without a username/dn, related to the 389 directory server.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2013-0336?

It affects 1 product.


Products: Redhat Freeipa.

## How do I fix CVE-2013-0336?

Upgrade to a fixed version.

## Is CVE-2013-0336 being exploited?

There is no known exploitation of CVE-2013-0336 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2012-5484](https://insights.sbomify.com/CVE-2012-5484/): Security feature bypass in n/a (high 7.9)
- [CVE-2011-3636](https://insights.sbomify.com/CVE-2011-3636/): Cross-site request forgery in n/a (medium 6.8)
- [CVE-2013-0199](https://insights.sbomify.com/CVE-2013-0199/): Information disclosure in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-0336 and fix it if it is affected.

What it is: CVE-2013-0336 is a medium-severity denial of service vulnerability in n/a, published on 3 Nov 2014. 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-2013-0336 in the wild and no public exploit code.

Affected product: n/a. 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-2013-0336/ (Markdown: https://insights.sbomify.com/CVE-2013-0336/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-0336
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-0336
- OSV: https://osv.dev/vulnerability/CVE-2013-0336

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-0336/
Summaries are generated and may contain mistakes; the official description above is the record.