# CVE-2022-0396: DoS from specifically crafted TCP packets

> Attackers can cause a denial of service in BIND by sending crafted TCP packets that leave connections in CLOSE_WAIT status indefinitely.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 23 Mar 2022
- **Updated:** 16 Sep 2024
- **Also known as:** ALPINE-CVE-2022-0396, AZL-9119, DEBIAN-CVE-2022-0396, GHSA-wqqg-j8m9-9rcc, UBUNTU-CVE-2022-0396

## What is CVE-2022-0396?

CVE-2022-0396 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

BIND 9.16.11 -> 9.16.26, 9.17.0 -> 9.18.0 and versions 9.16.11-S1 -> 9.16.26-S1 of the BIND Supported Preview Edition. Specifically crafted TCP streams can cause connections to BIND to remain in CLOSE_WAIT status for an indefinite period of time, even after the client has terminated the connection.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2022-0396?

It affects 11 products.


Products: Fedoraproject Fedora, Isc Bind, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware, Netapp H500e Firmware, Netapp H500s Firmware, Netapp H700e Firmware, Netapp H700s Firmware, Siemens Sinec Ins.

## How do I fix CVE-2022-0396?

Upgrade to a fixed version.

## Is CVE-2022-0396 being exploited?

There is no known exploitation of CVE-2022-0396 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-0396 and fix it if it is affected.

What it is: CVE-2022-0396 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 23 Mar 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-2022-0396 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. 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-2022-0396/ (Markdown: https://insights.sbomify.com/CVE-2022-0396/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-0396
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-0396
- OSV: https://osv.dev/vulnerability/CVE-2022-0396

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-0396/
Summaries are generated and may contain mistakes; the official description above is the record.