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CVE-2023-42464

Published: 16 September 2023

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.

Notes

AuthorNote
sbeattie
2.x versions and older do not support the spotlight
protocol, support introduced in 3.1.0
code affected shares origin with samba's mdssvc.c; this
issue is the netatalk version of the samba CVE-2023-34967

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
netatalk
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal
Released (3.1.12~ds-4ubuntu0.20.04.3)
jammy
Released (3.1.12~ds-9ubuntu0.22.04.3)
lunar
Released (3.1.14~ds-1ubuntu0.1)
mantic Needed

trusty Not vulnerable
(code not present)
upstream
Released (3.1.17)
xenial Not vulnerable
(code not present)
Patches:
upstream: https://github.com/Netatalk/netatalk/commit/a0ee3c246ee9e082436192290610a4d812fc0b7f

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H