CVE-2022-23121

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-28 · updated 2026-06-17
Weakness: CWE-755

Description

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. Was ZDI-CAN-15819.

Affected products

Debian Linux: 10.0, 11.0
Netatalk: before 3.1.13 — fixed in 3.1.13

How to fix

Upgrade to a fixed version: Netatalk 3.1.13. Check the vendor advisory for mitigations.

References

https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html
https://lists.debian.org/debian-lts-announce/2023/06/msg00000.html
https://netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html
https://security.gentoo.org/glsa/202311-02
https://www.debian.org/security/2023/dsa-5503
https://www.zerodayinitiative.com/advisories/ZDI-22-527/
https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html
https://lists.debian.org/debian-lts-announce/2023/06/msg00000.html
https://netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html
https://security.gentoo.org/glsa/202311-02
https://www.debian.org/security/2023/dsa-5503
https://www.kb.cert.org/vuls/id/709991

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