# CVE-2013-6467: Null dereference in n/a

> Remote attackers can cause a denial of service in Libreswan by sending malformed IKEv2 packets, triggering a NULL pointer dereference and daemon restart.

- **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:** No
- **Published:** 26 Jan 2014
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-m87x-r8q9-jm9c

## What is CVE-2013-6467?

CVE-2013-6467 is a medium-severity vulnerability in n/a, published on 26 Jan 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Libreswan 3.7 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

## Which versions are affected by CVE-2013-6467?

It affects 1 product.


Products: Libreswan Libreswan.

## How do I fix CVE-2013-6467?

No fix has been published for CVE-2013-6467 yet. Limit exposure of the affected software until one is available.

## Is CVE-2013-6467 being exploited?

There is no known exploitation of CVE-2013-6467 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2013-7283](https://insights.sbomify.com/CVE-2013-7283/): Race condition in n/a (critical 9.3)
- [CVE-2026-12413](https://insights.sbomify.com/CVE-2026-12413/): IKEv2 Denial of Service via malformed fragmentation (high 7.5)
- [CVE-2026-50721](https://insights.sbomify.com/CVE-2026-50721/): IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (high 7.5)
- [CVE-2026-50722](https://insights.sbomify.com/CVE-2026-50722/): IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (high 7.5)
- [CVE-2023-30570](https://insights.sbomify.com/CVE-2023-30570/): Denial of service in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-6467 and fix it if it is affected.

What it is: CVE-2013-6467 is a medium-severity vulnerability in n/a, published on 26 Jan 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-2013-6467 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-2013-6467/ (Markdown: https://insights.sbomify.com/CVE-2013-6467/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-6467
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-6467
- OSV: https://osv.dev/vulnerability/CVE-2013-6467

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-6467/
Summaries are generated and may contain mistakes; the official description above is the record.