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Fencer Vulns
critical 9.8

CVE-2023-42464 json

A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17.

published 2023-09-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-46904

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

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.

Patch / fix

  • netatalk netatalk 3.1.17
  • netatalk Debian 14, Debian 13 3.1.17~ds-1

debian advisories DEBIAN-CVE-2023-42464

  • netatalk Ubuntu 20.04 LTS 3.1.12~ds-4ubuntu0.20.04.3
  • netatalk Ubuntu 22.04 LTS 3.1.12~ds-9ubuntu0.22.04.3

ubuntu advisories UBUNTU-CVE-2023-42464

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • netatalk SLE Workstation Extension 12 SP5, SLE Software Development Kit 12 SP5 3.1.0-3.19.1

suse advisories SUSE-SU-2023:3779-1

  • netatalk Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 3.1.17-r0

alpine advisories ALPINE-CVE-2023-42464

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-42464 updated cvss 9.8

netatalk: Type Confusion vulnerability in the Spotlight RPC functions in afpd deamon

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.