# CVE-2012-6083: Denial of service in freeciv

> Remote attackers can cause a denial of service in Freeciv by sending a crafted packet, affecting game availability.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 23 Jan 2020
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2012-6083, GHSA-4c5q-v3gj-45mr

## What is CVE-2012-6083?

CVE-2012-6083 is a high-severity denial of service vulnerability in freeciv, published on 23 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Freeciv before 2.3.3 allows remote attackers to cause a denial of service via a crafted packet.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2012-6083?

It affects 1 product.


Products: Freeciv Freeciv.

## How do I fix CVE-2012-6083?

Upgrade to a fixed version.

## Is CVE-2012-6083 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-6083 exists.

Public exploit code:

- Freeciv 2.2.1 - Multiple Remote Denial of Service Vulnerabilities (exploitdb)

## Other vulnerabilities in freeciv

- [CVE-2010-2445](https://insights.sbomify.com/CVE-2010-2445/): Code injection in n/a (critical 10.0)
- [CVE-2022-39047](https://insights.sbomify.com/CVE-2022-39047/): Memory corruption in n/a (high 8.8)
- [CVE-2006-3913](https://insights.sbomify.com/CVE-2006-3913/): Memory corruption in n/a (high 7.5)
- [CVE-2006-0047](https://insights.sbomify.com/CVE-2006-0047/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-6083 and fix it if it is affected.

What it is: CVE-2012-6083 is a high-severity denial of service vulnerability in freeciv, published on 23 Jan 2020. 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-2012-6083 exists.

Affected product: freeciv. 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-2012-6083/ (Markdown: https://insights.sbomify.com/CVE-2012-6083/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-6083
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-6083
- OSV: https://osv.dev/vulnerability/CVE-2012-6083

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-6083/
Summaries are generated and may contain mistakes; the official description above is the record.