dbcve.org
Debian LinuxOperating system · Debian

CVE-2022-23122

CRITICAL · 9.8 CVSS v3.1 Published 2023-03-28
Fix available
A fix is available. Upgrade to 3.1.13 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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 setfilparams 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 stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15837.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A stack-based buffer overflow vulnerability in Netatalk's setfilparams function allows remote unauthenticated attackers to execute arbitrary code with root privileges. The flaw results from insufficient validation of user-supplied data length before copying to a fixed-size stack-based buffer.

MitigationUpdate Netatalk to the patched version; if immediate patching is not possible, disable or restrict network access to the Netatalk service and implement network segmentation to minimize exposure.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Debian LinuxOperating system
Affected:= 10.0= 11.0
NetatalkApplication
Affected:< 3.1.13

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check if Netatalk is installed
    Run 'dpkg -l | grep netatalk' on Debian systems or 'rpm -qa | grep -i netatalk' on RPM-based systems
    Affected if Netatalk package is present on the system
  2. Determine installed Netatalk version
    Run 'dpkg -l netatalk' or 'netatalk -V' to retrieve the exact version number
    Affected if Version is lower than 3.1.13 (e.g., 3.1.12, 3.1.11, etc.)
  3. Check if Netatalk service is running and exposed
    Run 'systemctl status netatalk' or check listening ports with 'ss -tlnp | grep 548' (default AppleTalk port)
    Affected if Netatalk daemon is actively running and bound to a network interface
  4. Verify the setfilparams function is reachable
    Confirm the AFP (Apple Filing Protocol) service is enabled in /etc/netatalk/netatalk.conf or /etc/afp.conf
    Affected if AFP service is enabled and Netatalk is accepting connections

System is affected if Netatalk version is below 3.1.13 and the AFP service is running and accessible to network attackers.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 3.1.13 or later
Fixed in 3.1.13
Interim mitigation

Update Netatalk to the patched version; if immediate patching is not possible, disable or restrict network access to the Netatalk service and implement network segmentation to minimize exposure.

Recommended fix High confidence

Netatalk 3.1.13 or later

  1. 1. Check current Netatalk version: dpkg -l | grep netatalk or rpm -qa | grep netatalk
  2. 2. For Debian 10/11: Run apt-get update && apt-get install netatalk to install the latest available package
  3. 3. Alternatively, download Netatalk 3.1.13 or later from the official source (netatalk.sourceforge.io) and compile/install
  4. 4. After upgrade, restart the netatalk service: systemctl restart netatalk or service netatalk restart
  5. 5. Verify the new version is installed: netatalk -V
Caveat Ensure existing Apple Filing Protocol (AFP) configurations and shares remain compatible with the new version

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Debian Linux Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA2.0 h
9.0 hours of engineering $1,570
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,512.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-23122 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data