# CVE-2017-12130: Null dereference in Tinysvcmdns

> A crafted DNS packet causes a NULL pointer dereference in the tinysvcmdns library, leading to a server crash and denial of service.

- **Severity:** High 7.5 (`CVSS:3.0/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:** No
- **Published:** 20 Jan 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-w7w4-rx65-9vww

## What is CVE-2017-12130?

CVE-2017-12130 is a high-severity vulnerability in Talos Tinysvcmdns, published on 20 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An exploitable NULL pointer dereference vulnerability exists in the tinysvcmdns library version 2017-11-05. A specially crafted packet can make the library dereference a NULL pointer leading to a server crash and denial of service. An attacker needs to send a DNS query to trigger this vulnerability.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2017-12130?

It affects 1 product.


Products: Tinysvcmdns Project Tinysvcmdns.

## How do I fix CVE-2017-12130?

No fix has been published for CVE-2017-12130 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-12130 being exploited?

There is no known exploitation of CVE-2017-12130 in the wild and no public exploit code.

## Other vulnerabilities in Talos Tinysvcmdns

- [CVE-2017-12087](https://insights.sbomify.com/CVE-2017-12087/): Memory corruption in Tinysvcmdns (critical 10.0)
- [CVE-2019-9748](https://insights.sbomify.com/CVE-2019-9748/): Information disclosure in n/a (critical 9.1)
- [CVE-2019-9747](https://insights.sbomify.com/CVE-2019-9747/): Denial of service in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-12130 and fix it if it is affected.

What it is: CVE-2017-12130 is a high-severity vulnerability in Talos Tinysvcmdns, published on 20 Jan 2018. 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-2017-12130 in the wild and no public exploit code.

Affected product: Talos Tinysvcmdns. 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-2017-12130/ (Markdown: https://insights.sbomify.com/CVE-2017-12130/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12130
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12130
- OSV: https://osv.dev/vulnerability/CVE-2017-12130

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-12130/
Summaries are generated and may contain mistakes; the official description above is the record.