# CVE-2022-3479: Null dereference in nss

> An attacker can cause a denial of service by triggering a segmentation fault in the NSS library during client authentication when no user certificate is present.

- **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:** 14 Oct 2022
- **Updated:** 20 Nov 2024
- **Also known as:** DEBIAN-CVE-2022-3479, GHSA-6275-5f4x-m3m3, OESA-2024-1211, OESA-2024-1212, OESA-2024-1213, OESA-2024-1214

## What is CVE-2022-3479?

CVE-2022-3479 is a high-severity vulnerability in Mozilla Network Security Services, published on 14 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability found in nss. By this security vulnerability, nss client auth crash without a user certificate in the database and this can lead us to a segmentation fault or crash.

## Which versions are affected by CVE-2022-3479?

It affects 1 product.


Products: Mozilla Network Security Services.

## How do I fix CVE-2022-3479?

Apply the vendor's patch.

## Is CVE-2022-3479 being exploited?

There is no known exploitation of CVE-2022-3479 in the wild and no public exploit code.

## Other vulnerabilities in Mozilla Network Security Services

- [CVE-2019-17006](https://insights.sbomify.com/CVE-2019-17006/): Memory corruption in NSS (critical 9.8)
- [CVE-2017-5461](https://insights.sbomify.com/CVE-2017-5461/): Memory corruption in Firefox (critical 9.8)
- [CVE-2009-2404](https://insights.sbomify.com/CVE-2009-2404/): Memory corruption in n/a (critical 9.3)
- [CVE-2017-11695](https://insights.sbomify.com/CVE-2017-11695/): Memory corruption in n/a (high 7.8)
- [CVE-2017-11696](https://insights.sbomify.com/CVE-2017-11696/): Memory corruption in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-3479 and fix it if it is affected.

What it is: CVE-2022-3479 is a high-severity vulnerability in Mozilla Network Security Services, published on 14 Oct 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-2022-3479 in the wild and no public exploit code.

Affected product: Mozilla Network Security Services. 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-2022-3479/ (Markdown: https://insights.sbomify.com/CVE-2022-3479/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3479
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3479
- OSV: https://osv.dev/vulnerability/CVE-2022-3479

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3479/
Summaries are generated and may contain mistakes; the official description above is the record.