# CVE-2007-3917: Denial of service in n/a

> Remote servers can crash Wesnoth clients and servers by sending long messages with invalid UTF-8 characters, 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:** 11 Oct 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DSA-1386-1, GHSA-5x5x-c9q8-x83f

## What is CVE-2007-3917?

CVE-2007-3917 is a high-severity denial of service vulnerability in n/a, published on 11 Oct 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The multiplayer engine in Wesnoth 1.2.x before 1.2.7 and 1.3.x before 1.3.9 allows remote servers to cause a denial of service (crash) via a long message with multibyte characters that can produce an invalid UTF-8 string after it is truncated, which triggers an uncaught exception, involving the truncate_message function in server/server.cpp.  NOTE: this issue affects both clients and servers.

Weakness: CWE-134 (Use of Externally-Controlled Format String)

## Which versions are affected by CVE-2007-3917?

It affects 1 product.


Products: Wesnoth Wesnoth.

## How do I fix CVE-2007-3917?

Upgrade to a fixed version.

## Is CVE-2007-3917 being exploited?

There is no known exploitation of CVE-2007-3917 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2009-0367](https://insights.sbomify.com/CVE-2009-0367/): Code injection in n/a (critical 9.3)
- [CVE-2007-5742](https://insights.sbomify.com/CVE-2007-5742/): Path traversal in n/a (critical 9.0)
- [CVE-2007-6201](https://insights.sbomify.com/CVE-2007-6201/): Denial of service in n/a (high 7.5)
- [CVE-2009-0878](https://insights.sbomify.com/CVE-2009-0878/): Denial of service in n/a (medium 5.0)
- [CVE-2009-0366](https://insights.sbomify.com/CVE-2009-0366/): Denial of service in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-3917 and fix it if it is affected.

What it is: CVE-2007-3917 is a high-severity denial of service vulnerability in n/a, published on 11 Oct 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-2007-3917 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-2007-3917/ (Markdown: https://insights.sbomify.com/CVE-2007-3917/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-3917
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-3917
- OSV: https://osv.dev/vulnerability/CVE-2007-3917

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-3917/
Summaries are generated and may contain mistakes; the official description above is the record.