CVE-2023-42464

Name	CVE-2023-42464
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3584-1, DSA-5503-1
Debian Bugs	1052087

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
netatalk (PTS)	stretch (security), stretch (lts), stretch	2.2.5-2+deb9u1	vulnerable
	buster (security), buster, buster (lts)	3.1.12~ds-3+deb10u5	fixed
	bullseye (security), bullseye	3.1.12~ds-8+deb11u1	fixed
	sid, trixie	4.0.3~ds-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
netatalk	source	stretch	(unfixed)	end-of-life
netatalk	source	buster	3.1.12~ds-3+deb10u4		DLA-3584-1
netatalk	source	bullseye	3.1.12~ds-8+deb11u1		DSA-5503-1
netatalk	source	(unstable)	3.1.17~ds-1			1052087

Notes

https://github.com/Netatalk/netatalk/issues/486
https://github.com/Netatalk/netatalk/pull/485
Fixed by: https://github.com/Netatalk/netatalk/commit/a0ee3c246ee9e082436192290610a4d812fc0b7f (main)
Fixed by: https://github.com/Netatalk/netatalk/commit/f6364ef0e5f1b7de88c5e837434af8a5df4c4c75 (netatalk-3-1-17)