# CVE-2012-1192: The resolver in Unbound before 1.4.11 overwrites cached server names and TTL values in NS records during the processing of a response to an


- **Severity:** Medium 6.4 (`AV:N/AC:L/Au:N/C:N/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 17 Feb 2012
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-w9x7-rg7h-623x

## What is CVE-2012-1192?

CVE-2012-1192 is a medium-severity vulnerability in n/a, published on 17 Feb 2012. 

### Official description

The resolver in Unbound before 1.4.11 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.

## Which versions are affected by CVE-2012-1192?

It affects 1 product.


Products: Unbound Unbound.

## How do I fix CVE-2012-1192?

No fix has been published for CVE-2012-1192 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-1192 being exploited?

There is no known exploitation of CVE-2012-1192 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2011-4869](https://insights.sbomify.com/CVE-2011-4869/): Denial of service in n/a (high 7.8)
- [CVE-2011-4528](https://insights.sbomify.com/CVE-2011-4528/): Use after free in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-1192 and fix it if it is affected.

What it is: CVE-2012-1192 is a medium-severity vulnerability in n/a, published on 17 Feb 2012. 
Exploitation: There is no known exploitation of CVE-2012-1192 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-2012-1192/ (Markdown: https://insights.sbomify.com/CVE-2012-1192/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-1192
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-1192
- OSV: https://osv.dev/vulnerability/CVE-2012-1192

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-1192/
Summaries are generated and may contain mistakes; the official description above is the record.