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Fencer Vulns
critical 9.8

CVE-2022-43634 in the critical feed json

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk.

published 2023-03-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-46630

cvss
9.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
19.1%
EPSS 19.1% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

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 dsi_writeinit function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-17646.

Patch / fix

  • netatalk Debian 14, Debian 13 3.1.15~ds-1

debian advisories DEBIAN-CVE-2022-43634

  • netatalk Ubuntu 20.04 LTS 3.1.12~ds-4ubuntu0.20.04.1
  • netatalk Ubuntu 22.04 LTS 3.1.12~ds-9ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2022-43634

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 3.1.0-3.14.1

suse advisories SUSE-SU-2023:0316-1

  • netatalk Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 3.1.15-r0

alpine advisories ALPINE-CVE-2022-43634

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-2022-43634 updated cvss 8.1

netatalk: buffer overflow in dsi_writeinit().

  • 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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
20 mo ago

Exploit prediction

19.05% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Netatalk Netatalk

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

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.