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Af 2x FirmwareOperating system · Ui

CVE-2023-23119

MEDIUM · 5.9 CVSS v3.1 Published 2023-02-02
Fix available
A fix is available. Upgrade to 3.2.2 or later.
See remediation →
68/100
Remediation priority · Elevated
Public exploit 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
The use of the cyclic redundancy check (CRC) algorithm for integrity check during firmware update makes Ubiquiti airFiber AF2X Radio firmware version 3.2.2 and earlier vulnerable to firmware modification attacks. An attacker can conduct a man-in-the-middle (MITM) attack to modify the new firmware image and bypass the checksum verification.

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

A detailed technical summary for this CVE is being prepared.

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
Af 2x FirmwareOperating system
Affected:< 3.2.2

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
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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

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 3.2.2 or later
Fixed in 3.2.2
Recommended fix High confidence

Ubiquiti airFiber AF2X Firmware 3.2.2 or later (upgrade to latest stable release)

  1. 1. Access the airFiber AF2X Radio management interface through its web UI or CLI
  2. 2. Navigate to the firmware upgrade section (typically under System or Maintenance settings)
  3. 3. Download the official firmware update from Ubiquiti's official support channels (community.ui.com or official Ubiquiti downloads)
  4. 4. Verify the firmware file integrity using the hash/checksum provided by Ubiquiti
  5. 5. Upload the firmware file to the radio device
  6. 6. Allow the upgrade process to complete without powering off the device
  7. 7. After reboot, verify the new firmware version is 3.2.2 or later
  8. 8. Confirm the device is functioning normally post-upgrade
Caveat Review Ubiquiti release notes for any configuration or feature changes between your current version and the new version

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

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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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-2023-23119 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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