CVE-2022-43634

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 18.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-29 · updated 2026-06-17
Weakness: CWE-122

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.

Affected products

Netatalk: 3.1.13

References

https://github.com/Netatalk/Netatalk/pull/186
https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZYWSGVA6WXREMB6PV56HAHKU7R6KPOP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GEAFLA5L2SHOUFBAGUXIF2TZLGBXGJKT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SG6WZW5LXFVH3P7ZVZRGHUVJEMEFKQLI/
https://www.debian.org/security/2023/dsa-5503
https://www.zerodayinitiative.com/advisories/ZDI-23-094/
https://github.com/Netatalk/Netatalk/pull/186
https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZYWSGVA6WXREMB6PV56HAHKU7R6KPOP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GEAFLA5L2SHOUFBAGUXIF2TZLGBXGJKT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SG6WZW5LXFVH3P7ZVZRGHUVJEMEFKQLI/

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