---
title: "CVE-2022-0194\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2022-0194?format=md
keywords: index, follow
---

# CVE-2022-0194

Publication date 21 March 2022

Last updated 25 August 2025

---

Ubuntu priority

**High**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2022-0194?format=md#impact-score)

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## Description

This vulnerability allows remote attackers to execute arbitrary code on
affected installations of Netatalk. Authentication is not required to
exploit this vulnerability. The specific flaw exists within the
ad\_addcomment function. The issue results from the lack of proper
validation of the length of user-supplied data prior to copying it to a
fixed-length stack-based buffer. An attacker can leverage this
vulnerability to execute code in the context of root. Was ZDI-CAN-15876.
This vulnerability allows remote attackers to execute arbitrary code on
affected installations of Netatalk. Authentication is not required to
exploit this vulnerability.
The specific flaw exists within the ad\_addcomment function. The issue
results from the lack of proper validation of the length of user-supplied
data prior to copying it to a fixed-length stack-based buffer. An attacker
can leverage this vulnerability to execute code in the context of root.]

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| netatalk | 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Fixed 3.1.12~ds-9ubuntu0.22.04.1 |
| 21.10 impish | Ignored end of life |
| 20.04 LTS focal | Fixed 3.1.12~ds-4ubuntu0.20.04.1 |
| 18.04 LTS bionic | Ignored end of standard support, was needed |
| 16.04 LTS xenial | Ignored end of ESM support, was ignored [changes too intrusive] |
| 14.04 LTS trusty | Ignored end of ESM support, was ignored [changes too intrusive] |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2022-0194?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| netatalk | * Upstream:   [4a8f6c9](https://github.com/Netatalk/Netatalk/commit/4a8f6c964d5ca86df27c50e50dc1b60d39c9b76d) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0194)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-0194)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-0194)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-0194)

### Related Ubuntu Security Notices (USN)

+ [USN-6146-1](https://usn.ubuntu.com/USN-6146-1)
+ Netatalk vulnerabilities
+ 8 June 2023

### Other references

* <https://kb.cert.org/vince/comm/case/267/>
* <https://sourceforge.net/p/netatalk/mailman/message/37628321/>
* <https://netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html>
* <https://www.cve.org/CVERecord?id=CVE-2022-0194>