What’s Vulnerable › Vulnerabilities

CVE-2023-42464

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-20 · updated 2026-06-17
• Weakness: CWE-843

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.

Affected products

• Debian Linux: 10.0, 11.0
• Netatalk: from 3.1 before 3.1.17 — fixed in 3.1.17

How to fix

Upgrade to a fixed version: Netatalk 3.1.17. Check the vendor advisory for mitigations.

References

• https://github.com/Netatalk/netatalk/issues/486
• https://lists.debian.org/debian-lts-announce/2023/09/msg00031.html
• https://netatalk.io/security/CVE-2023-42464
• https://netatalk.sourceforge.io/
• https://netatalk.sourceforge.io/3.1/htmldocs/afpd.8.html
• https://netatalk.sourceforge.io/CVE-2023-42464.php
• https://www.debian.org/security/2023/dsa-5503
• https://github.com/Netatalk/netatalk/issues/486
• https://lists.debian.org/debian-lts-announce/2023/09/msg00031.html
• https://netatalk.io/security/CVE-2023-42464
• https://netatalk.sourceforge.io/
• https://netatalk.sourceforge.io/3.1/htmldocs/afpd.8.html

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