Ubiquiti airFiber AF2X up to 3.2.2 Firmware Update channel accessible

Summaryinfo

A vulnerability labeled as critical has been found in Ubiquiti airFiber AF2X up to 3.2.2. This issue affects some unknown processing of the component Firmware Update Handler. Executing a manipulation can lead to channel accessible. This vulnerability appears as CVE-2023-23119. There is no available exploit.

Detailsinfo

A vulnerability was found in Ubiquiti airFiber AF2X up to 3.2.2. It has been declared as critical. This vulnerability affects an unknown part of the component Firmware Update Handler. The manipulation with an unknown input leads to a channel accessible vulnerability. The CWE definition for the vulnerability is CWE-300. The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was presented 02/02/2023. The advisory is shared for download at community.ui.com. This vulnerability was named CVE-2023-23119 since 01/11/2023. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/06/2025). The MITRE ATT&CK project declares the attack technique as T1557.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-27219). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Ubiquiti

Name

• airFiber AF2X

Version

• 3.2.0
• 3.2.1
• 3.2.2

License

• commercial

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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