# CVE-2007-1306: Null dereference in n/a

> Remote attackers can crash Asterisk by sending malformed SIP packets, causing a 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:** Yes
- **Published:** 7 Mar 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2007-1306, GHSA-j5g7-pvcx-38pp

## What is CVE-2007-1306?

CVE-2007-1306 is a high-severity vulnerability in Digium Asterisk, published on 7 Mar 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Asterisk 1.4 before 1.4.1 and 1.2 before 1.2.16 allows remote attackers to cause a denial of service (crash) by sending a Session Initiation Protocol (SIP) packet without a URI and SIP-version header, which results in a NULL pointer dereference.

## Which versions are affected by CVE-2007-1306?

It affects 1 product.


Products: Digium Asterisk.

## How do I fix CVE-2007-1306?

Upgrade to a fixed version.

## Is CVE-2007-1306 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1306 exists.

Public exploit code:

- Asterisk 1.2.15/1.4.0 - Remote Denial of Service (exploitdb)

## 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-2007-1306 and fix it if it is affected.

What it is: CVE-2007-1306 is a high-severity vulnerability in Digium Asterisk, published on 7 Mar 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1306 exists.

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-2007-1306/ (Markdown: https://insights.sbomify.com/CVE-2007-1306/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-1306
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-1306
- OSV: https://osv.dev/vulnerability/CVE-2007-1306

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-1306/
Summaries are generated and may contain mistakes; the official description above is the record.