TI-2022-21402 Aliases CVE-2022-43634 GHSA-fwj9-7qq8-jc93

Heap-based buffer overflow in Netatalk

HIGH 67CWE-122Published 2023-03-29 · Updated 2025-02-12

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.19051 97th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Netatalk	Netatalk	3.1.13	—	No fix listed	CNA

Netatalk VendorNetatalk Affected 3.1.13 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:netatalk:netatalk:3.1.13:::::::*	3.1.13	Vulnerable	Netatalk

cpe:2.3:a:netatalk:netatalk:3.1.13:*:*:*:*:*:*:* Versions 3.1.13 Vulnerable ·Netatalk

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2022-43634
2026-10-03 Alias added: GHSA-fwj9-7qq8-jc93

References

Patch 1

https://github.com/Netatalk/Netatalk/pull/186

Advisory 5

Other 1

[debian-lts-announce] 20230516 [SECURITY] [DLA 3426-1] netatalk security update

TI-2018-01076 Out-of-bounds write in Netatalk CVSS 3.1CRITICAL 9.8
TI-2024-25689 Netatalk before 3.2.1 has an off-by-one error and resultant heap-based buffer overflow… CVSS 3.1CRITICAL 9.8
TI-2024-25690 Netatalk before 3.2.1 has an off-by-one error, and resultant heap-based buffer overflow… CVSS 3.1HIGH 7.5
TI-2022-22254 Netatalk through 3.1.13 has an afp_getappl heap-based buffer overflow resulting in code… CVSS 3.1HIGH 7.8
TI-2022-07290 Improper handling of exceptional conditions in Netatalk CVSS 3.1CRITICAL 9.8
TI-2024-25691 Netatalk before 3.2.1 has an off-by-one error and resultant heap-based buffer overflow… CVSS 3.1CRITICAL 9.8

See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences