# CVE-2012-6696: Integer overflow in n/a

> An integer overflow in inspircd can lead to a denial of service, requiring an upgrade to the latest version.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 25 Sep 2017
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2012-6696, GHSA-67r3-xhrr-46h9, UBUNTU-CVE-2012-6696

## What is CVE-2012-6696?

CVE-2012-6696 is a critical vulnerability in n/a, published on 25 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

inspircd in Debian before 2.0.7 does not properly handle unsigned integers.  NOTE: This vulnerability exists because of an incomplete fix to CVE-2012-1836.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2012-6696?

It affects 1 product.


Products: Inspircd Inspircd.

## How do I fix CVE-2012-6696?

Upgrade to a fixed version.

## Is CVE-2012-6696 being exploited?

There is no known exploitation of CVE-2012-6696 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2012-1836](https://insights.sbomify.com/CVE-2012-1836/): Memory corruption in n/a (high 7.5)
- [CVE-2019-20918](https://insights.sbomify.com/CVE-2019-20918/): Use after free in n/a (medium 6.5)
- [CVE-2008-1925](https://insights.sbomify.com/CVE-2008-1925/): Memory corruption in n/a (medium 5.0)
- [CVE-2021-33586](https://insights.sbomify.com/CVE-2021-33586/): Use after free in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-6696 and fix it if it is affected.

What it is: CVE-2012-6696 is a critical vulnerability in n/a, published on 25 Sep 2017. 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-2012-6696 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-2012-6696/ (Markdown: https://insights.sbomify.com/CVE-2012-6696/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-6696
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-6696
- OSV: https://osv.dev/vulnerability/CVE-2012-6696

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-6696/
Summaries are generated and may contain mistakes; the official description above is the record.