# CVE-2022-3347: Incorrect validation of root DNSSEC public keys in github.com/peterzen/goresolver

> Attackers can bypass DNSSEC validation by presenting self-signed root keys, causing the library to accept invalid DNS records.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Dec 2022
- **Updated:** 14 Apr 2025
- **Also known as:** GHSA-jr65-gpj5-cw74, GO-2022-1026

## What is CVE-2022-3347?

CVE-2022-3347 is a high-severity vulnerability in github.com/peterzen/goresolver, published on 27 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

DNSSEC validation is not performed correctly. An attacker can cause this package to report successful validation for invalid, attacker-controlled records. Root DNSSEC public keys are not validated, permitting an attacker to present a self-signed root key and delegation chain.

Weakness: CWE-345 (Insufficient Verification of Data Authenticity)

## Which versions are affected by CVE-2022-3347?

3 open source packages ship an affected version, including github.com/peterzen/goresolver. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/peterzen/goresolver` | Go | All versions | None |
| `github.com/peterzen/goresolver` | Go | All versions to 1.0.2 | None |
| `github.com/peterzen/goresolver` | Go | All versions to 1.0.2 | None |

Products: Go-Resolver Project Go-Resolver.

## How do I fix CVE-2022-3347?

No fix has been published for CVE-2022-3347 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-3347 being exploited?

There is no known exploitation of CVE-2022-3347 in the wild and no public exploit code.

## Other vulnerabilities in github.com/peterzen/goresolver

- [CVE-2022-3346](https://insights.sbomify.com/CVE-2022-3346/): Incorrect DNSSEC validation due to unchecked owner names in github.com/peterzen/goresolver (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-3347 and fix it if it is affected.

What it is: CVE-2022-3347 is a high-severity vulnerability in github.com/peterzen/goresolver, published on 27 Dec 2022. 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-2022-3347 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/peterzen/goresolver (Go): affected all versions; no fix listed
- github.com/peterzen/goresolver (Go): affected all versions up to 1.0.2; no fix listed
- github.com/peterzen/goresolver (Go): affected all versions up to 1.0.2; no fix listed

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-2022-3347/ (Markdown: https://insights.sbomify.com/CVE-2022-3347/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3347
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3347
- OSV: https://osv.dev/vulnerability/CVE-2022-3347

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3347/
Summaries are generated and may contain mistakes; the official description above is the record.