# CVE-2022-43634: netatalk: This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk

CVE-2022-43634 is fixed in netatalk on 1 platform, first by netatalk 3.1.12~ds-4ubuntu0.20.04.1, released March 29, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-43634
- Priority: High
- CVSS: 9.8 (High)
- EPSS: 0.1905
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 29, 2023

## 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 dsi_writeinit 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 heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-17646.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | netatalk Debian 13.5 (trixie) | 3.1.15~ds-1 | [DEBIAN-CVE-2022-43634](https://patchblox.com/security/data/fix/linux/debian-cve-2022-43634.md) | Mar 29, 2023 |
| Linux | netatalk Debian 14 | 3.1.15~ds-1 | [DEBIAN-CVE-2022-43634](https://patchblox.com/security/data/fix/linux/debian-cve-2022-43634.md) | Mar 29, 2023 |
| Linux | netatalk Ubuntu 20.04 LTS (focal) | 3.1.12~ds-4ubuntu0.20.04.1 | [netatalk 3.1.12~ds-4ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-netatalk-3.1.12-ds-4ubuntu0.20.04.1.md) | Mar 29, 2023 |
| Linux | netatalk Ubuntu 22.04.1 LTS (jammy) | 3.1.12~ds-9ubuntu0.22.04.1 | [netatalk 3.1.12~ds-9ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-netatalk-3.1.12-ds-9ubuntu0.22.04.1.md) | Mar 29, 2023 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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