dbcve.org
Debian LinuxOperating system · Debian

CVE-2022-23124

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 disclose sensitive information on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the get_finderinfo method. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-15870.

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 buffer over-read vulnerability in Netatalk's get_finderinfo method allows unauthenticated remote attackers to read memory past the end of an allocated buffer due to lack of proper validation of user-supplied data. This information disclosure can be chained with other vulnerabilities to achieve arbitrary code execution as root.

MitigationUpdate Netatalk to the latest patched version. If immediate patching is not feasible, restrict network access to the AFP service to trusted sources only.

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. Determine if Netatalk is installed
    Run 'dpkg -l | grep netatalk' on Debian systems, or 'rpm -qa | grep -i netatalk' on RHEL-based systems, or check for the presence of the netatalk package using your system's package manager.
    Affected if Netatalk package is present on the system
  2. Check the installed Netatalk version
    Run 'dpkg -s netatalk' on Debian systems or 'rpm -qi netatalk' on RHEL-based systems to retrieve the version number.
    Affected if The installed version is less than 3.1.13 (for example, 3.1.12, 3.1.11, etc.)
  3. Verify the AFP service is running and exposed
    Check if the Netatalk AFP daemon is active using 'systemctl status netatalk' or 'ps aux | grep afpd', and review network listening ports with 'netstat -tlnp | grep 548' or 'ss -tlnp | grep 548'.
    Affected if The AFP service (port 548/TCP) is running and accessible from untrusted networks
  4. Confirm get_finderinfo method is accessible
    The vulnerability exists in the get_finderinfo method used by AFP to handle AppleDouble files. If AFP is running with default or typical configuration, this method processes user-supplied data without proper bounds checking.
    Affected if AFP service is actively processing file metadata requests from clients

If Netatalk is installed with a version lower than 3.1.13 and the AFP service is running and network-accessible, the environment is affected by CVE-2022-23124.

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 latest patched version. If immediate patching is not feasible, restrict network access to the AFP service to trusted sources only.

Recommended fix High confidence

Netatalk 3.1.13 or later

  1. Identify the current Netatalk version installed (e.g., dpkg -l | grep netatalk or rpm -q netatalk)
  2. For Debian 10/11 systems: Update the package repository lists (apt update)
  3. Install the fixed version of Netatalk by running: apt install netatalk (this will install version 3.1.13 or later from Debian repositories)
  4. Verify the upgrade was successful by checking the installed version
  5. Restart the Netatalk service if it is running (systemctl restart netatalk or appropriate init command)
  6. Ensure the service is enabled and running (systemctl status netatalk)

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
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
Get the upgrade done

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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-2022-23124 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