# CVE-2007-4426: Null dereference in n/a

> Remote attackers can crash Live for Speed servers by sending malformed pre-login packets, 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:** No
- **Published:** 20 Aug 2007
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-mxp6-9cg4-mcrc

## What is CVE-2007-4426?

CVE-2007-4426 is a medium-severity vulnerability in n/a, published on 20 Aug 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Live for Speed (LFS) S1 and S2 allows remote attackers to cause a denial of service (server crash) via (1) a certain 0x00 byte in a pre-login ID 3 packet, which triggers a NULL dereference; or (2) a pre-login ID 5 packet that lacks certain strings, which triggers an invalid pointer dereference.

## Which versions are affected by CVE-2007-4426?

It affects 1 product.


Products: Live for Speed Live for Speed.

## How do I fix CVE-2007-4426?

No fix has been published for CVE-2007-4426 yet. Limit exposure of the affected software until one is available.

## Is CVE-2007-4426 being exploited?

There is no known exploitation of CVE-2007-4426 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2007-4425](https://insights.sbomify.com/CVE-2007-4425/): Memory corruption in n/a (medium 6.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-4426 and fix it if it is affected.

What it is: CVE-2007-4426 is a medium-severity vulnerability in n/a, published on 20 Aug 2007. 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-2007-4426 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-2007-4426/ (Markdown: https://insights.sbomify.com/CVE-2007-4426/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-4426
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-4426
- OSV: https://osv.dev/vulnerability/CVE-2007-4426

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-4426/
Summaries are generated and may contain mistakes; the official description above is the record.