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Vulnerability record · CVE-2023-42464 · published 20 September 2023

CVE-2023-42464: Netatalk type confusion vulnerability

Netatalk · Netatalk

A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17. When parsing Spotlight RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the underlying protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a malicious actor may be able to fully control the value of the pointer and theoretically achieve Remote Code Execution on the host. This issue is similar to CVE-2023-34967.

9.8 CVSS 3.1 Critical EPSS 2.1% · top 19.0% CWE-843 · Type confusion
9.8CVSS 3.1 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17. When parsing Spotlight RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the underlying protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a malicious actor may be able to fully control the value of the pointer and theoretically achieve Remote Code Execution on the host. This issue is similar to CVE-2023-34967.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Netatalk/netatalk/issues/486 Issue TrackingPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00031.html Mailing ListThird Party Advisory
https://netatalk.io/security/CVE-2023-42464
https://netatalk.sourceforge.io/ Product
https://netatalk.sourceforge.io/3.1/htmldocs/afpd.8.html Product
https://netatalk.sourceforge.io/CVE-2023-42464.php PatchVendor Advisory
https://www.debian.org/security/2023/dsa-5503 Third Party Advisory
https://github.com/Netatalk/netatalk/issues/486 Issue TrackingPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00031.html Mailing ListThird Party Advisory
https://netatalk.io/security/CVE-2023-42464
https://netatalk.sourceforge.io/ Product
https://netatalk.sourceforge.io/3.1/htmldocs/afpd.8.html Product
https://netatalk.sourceforge.io/CVE-2023-42464.php PatchVendor Advisory
https://www.debian.org/security/2023/dsa-5503 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2023-42464), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.