# CVE-2012-3553: Null dereference in n/a

> Remote authenticated users can crash the Asterisk PBX daemon via a NULL pointer dereference in the Skinny channel driver.

- **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:** No
- **Published:** 19 Jun 2012
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-9mqv-jvm5-5mv6

## What is CVE-2012-3553?

CVE-2012-3553 is a medium-severity vulnerability in Digium Asterisk, published on 19 Jun 2012. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

chan_skinny.c in the Skinny (aka SCCP) channel driver in Asterisk Open Source 10.x before 10.5.1 allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by sending a Station Key Pad Button message and closing a connection in off-hook mode, a related issue to CVE-2012-2948.

## Which versions are affected by CVE-2012-3553?

It affects 1 product.


Products: Digium Asterisk.

## How do I fix CVE-2012-3553?

No fix has been published for CVE-2012-3553 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-3553 being exploited?

There is no known exploitation of CVE-2012-3553 in the wild and no public exploit code.

## Other vulnerabilities in Digium Asterisk

- [CVE-2017-14100](https://insights.sbomify.com/CVE-2017-14100/): Command injection in n/a (critical 9.8)
- [CVE-2014-8418](https://insights.sbomify.com/CVE-2014-8418/): Privilege escalation in n/a (critical 9.0)
- [CVE-2011-1599](https://insights.sbomify.com/CVE-2011-1599/): Missing authorization in n/a (critical 9.0)
- [CVE-2017-16671](https://insights.sbomify.com/CVE-2017-16671/): Memory corruption in n/a (high 8.8)
- [CVE-2017-7617](https://insights.sbomify.com/CVE-2017-7617/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-3553 and fix it if it is affected.

What it is: CVE-2012-3553 is a medium-severity vulnerability in Digium Asterisk, published on 19 Jun 2012. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2012-3553 in the wild and no public exploit code.

Affected product: Digium Asterisk. 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-2012-3553/ (Markdown: https://insights.sbomify.com/CVE-2012-3553/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-3553
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-3553
- OSV: https://osv.dev/vulnerability/CVE-2012-3553

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-3553/
Summaries are generated and may contain mistakes; the official description above is the record.