Advisory Details

March 23rd, 2022

(Pwn2Own) Netatalk parse_entries Improper Handling of Exceptional Conditions Remote Code Execution Vulnerability

CVE ID	CVE-2022-23121
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Netatalk
AFFECTED PRODUCTS	Netatalk
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parse_entries function. The issue results from the lack of proper error handling when parsing AppleDouble entries. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	Netatalk has issued an update to correct this vulnerability. More details can be found at: https://netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html
DISCLOSURE TIMELINE	2021-12-03 - Vulnerability reported to vendor 2022-03-23 - Coordinated public release of advisory
CREDIT	NCC Group EDG (Alex Plaskett, Cedric Halbronn, Aaron Adams)

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