# CVE-2012-3549: Null dereference in n/a

> Remote attackers can crash FreeBSD systems via a crafted SCTP ASCONF chunk, causing a kernel panic and denial of service.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Oct 2012
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-3m78-wrvx-56jx

## What is CVE-2012-3549?

CVE-2012-3549 is a high-severity vulnerability in Freebsd Freebsd, published on 9 Oct 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The SCTP implementation in FreeBSD 8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and kernel panic) via a crafted ASCONF chunk.

## Which versions are affected by CVE-2012-3549?

It affects 1 product.


Products: Freebsd Freebsd.

## How do I fix CVE-2012-3549?

No fix has been published for CVE-2012-3549 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-3549 being exploited?

There is no known exploitation of CVE-2012-3549 in the wild and no public exploit code.

Public exploit code:

- FreeBSD - SCTP Remote NULL Ptr Dereference Denial of Service (exploitdb)

## Other vulnerabilities in Freebsd Freebsd

- [CVE-2018-17160](https://insights.sbomify.com/CVE-2018-17160/): Memory corruption in FreeBSD (critical 10.0)
- [CVE-2014-3954](https://insights.sbomify.com/CVE-2014-3954/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-4304](https://insights.sbomify.com/CVE-2006-4304/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-0226](https://insights.sbomify.com/CVE-2006-0226/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-0002](https://insights.sbomify.com/CVE-2004-0002/): Denial of service in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-3549 and fix it if it is affected.

What it is: CVE-2012-3549 is a high-severity vulnerability in Freebsd Freebsd, published on 9 Oct 2012. 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-2012-3549 in the wild and no public exploit code.

Affected product: Freebsd Freebsd. 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-2012-3549/ (Markdown: https://insights.sbomify.com/CVE-2012-3549/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-3549
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-3549
- OSV: https://osv.dev/vulnerability/CVE-2012-3549

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-3549/
Summaries are generated and may contain mistakes; the official description above is the record.