high
8.8
CWE
94 75
Advisory Published
Updated

CVE-2023-23912: Code Injection

First published: Thu Feb 09 2023(Updated: )

A vulnerability, found in EdgeRouters Version 2.0.9-hotfix.5 and earlier and UniFi Security Gateways (USG) Version 4.4.56 and earlier with their DHCPv6 prefix delegation set to dhcpv6-stateless or dhcpv6-stateful, allows a malicious actor directly connected to the WAN interface of an affected device to create a remote code execution vulnerability.

Credit: support@hackerone.com

Affected SoftwareAffected VersionHow to fix
Zyxel USG firmware<4.4.57
Ubiquiti USG-Pro-4
ui usg-pro-4 firmware<4.4.57
ui usg-pro-4 firmware
ui ER-10X Firmware<2.0.9
ui ER-10X Firmware=2.0.9
ui ER-10X Firmware=2.0.9-hotfix2
ui ER-10X Firmware=2.0.9-hotfix4
ui ER-10X Firmware=2.0.9-hotfix5
ui ER-10X Firmware
Ubiquiti EdgeRouter Firmware<2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix2
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix4
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix5
UI ER-12 Firmware
ui ER-12P Firmware<2.0.9
ui ER-12P Firmware=2.0.9
ui ER-12P Firmware=2.0.9-hotfix2
ui ER-12P Firmware=2.0.9-hotfix4
ui ER-12P Firmware=2.0.9-hotfix5
ui er-12p firmware
Ubiquiti EdgeRouter Firmware<2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix2
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix4
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix5
UI ER-4 Firmware
ui ER-6P Firmware<2.0.9
ui ER-6P Firmware=2.0.9
ui ER-6P Firmware=2.0.9-hotfix2
ui ER-6P Firmware=2.0.9-hotfix4
ui ER-6P Firmware=2.0.9-hotfix5
ui er-6p firmware
ui erpro-8 firmware<2.0.9
ui erpro-8 firmware=2.0.9
ui erpro-8 firmware=2.0.9-hotfix2
ui erpro-8 firmware=2.0.9-hotfix4
ui erpro-8 firmware=2.0.9-hotfix5
UI ER-8-XG Firmware
ui EdgeRouter X firmware<2.0.9
ui EdgeRouter X firmware=2.0.9
ui EdgeRouter X firmware=2.0.9-hotfix2
ui EdgeRouter X firmware=2.0.9-hotfix4
ui EdgeRouter X firmware=2.0.9-hotfix5
ui er-x firmware
ui er-x-sfp firmware<2.0.9
ui er-x-sfp firmware=2.0.9
ui er-x-sfp firmware=2.0.9-hotfix2
ui er-x-sfp firmware=2.0.9-hotfix4
ui er-x-sfp firmware=2.0.9-hotfix5
ui er-x-sfp firmware
All of
Zyxel USG firmware<4.4.57
Ubiquiti USG-Pro-4
All of
ui usg-pro-4 firmware<4.4.57
ui usg-pro-4 firmware
All of
Any of
ui ER-10X Firmware<2.0.9
ui ER-10X Firmware=2.0.9
ui ER-10X Firmware=2.0.9-hotfix2
ui ER-10X Firmware=2.0.9-hotfix4
ui ER-10X Firmware=2.0.9-hotfix5
ui ER-10X Firmware
All of
Any of
Ubiquiti EdgeRouter Firmware<2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix2
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix4
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix5
UI ER-12 Firmware
All of
Any of
ui ER-12P Firmware<2.0.9
ui ER-12P Firmware=2.0.9
ui ER-12P Firmware=2.0.9-hotfix2
ui ER-12P Firmware=2.0.9-hotfix4
ui ER-12P Firmware=2.0.9-hotfix5
ui er-12p firmware
All of
Any of
Ubiquiti EdgeRouter Firmware<2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix2
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix4
Ubiquiti EdgeRouter Firmware=2.0.9-hotfix5
UI ER-4 Firmware
All of
Any of
ui ER-6P Firmware<2.0.9
ui ER-6P Firmware=2.0.9
ui ER-6P Firmware=2.0.9-hotfix2
ui ER-6P Firmware=2.0.9-hotfix4
ui ER-6P Firmware=2.0.9-hotfix5
ui er-6p firmware
All of
Any of
ui erpro-8 firmware<2.0.9
ui erpro-8 firmware=2.0.9
ui erpro-8 firmware=2.0.9-hotfix2
ui erpro-8 firmware=2.0.9-hotfix4
ui erpro-8 firmware=2.0.9-hotfix5
UI ER-8-XG Firmware
All of
Any of
ui EdgeRouter X firmware<2.0.9
ui EdgeRouter X firmware=2.0.9
ui EdgeRouter X firmware=2.0.9-hotfix2
ui EdgeRouter X firmware=2.0.9-hotfix4
ui EdgeRouter X firmware=2.0.9-hotfix5
ui er-x firmware
All of
Any of
ui er-x-sfp firmware<2.0.9
ui er-x-sfp firmware=2.0.9
ui er-x-sfp firmware=2.0.9-hotfix2
ui er-x-sfp firmware=2.0.9-hotfix4
ui er-x-sfp firmware=2.0.9-hotfix5
ui er-x-sfp firmware

Remedy

https://community.ui.com/releases/Security-Advisory-Bulletin-028-028/696e4e3b-718c-4da4-9a21-965a85633b5f

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Reference Links

Frequently Asked Questions

  • What is CVE-2023-23912?

    CVE-2023-23912 is a vulnerability found in EdgeRouters Version 2.0.9-hotfix.5 and earlier and UniFi Security Gateways (USG) Version 4.4.56 and earlier with their DHCPv6 prefix delegation set to dhcpv6-stateless or dhcpv6-stateful, allowing a malicious actor to directly connect to the WAN interface of the affected device.

  • How severe is CVE-2023-23912?

    CVE-2023-23912 has a severity rating of 8.8, which is considered high.

  • How can I fix CVE-2023-23912?

    To fix CVE-2023-23912, update your EdgeRouters to Version 2.0.9-hotfix.6 or later, or update your UniFi Security Gateways (USG) to Version 4.4.57 or later.

  • Is my device affected by CVE-2023-23912?

    If you are using EdgeRouters Version 2.0.9-hotfix.5 or earlier, or UniFi Security Gateways (USG) Version 4.4.56 or earlier with DHCPv6 prefix delegation set to dhcpv6-stateless or dhcpv6-stateful, then your device is affected by CVE-2023-23912.

  • Where can I find more information about CVE-2023-23912?

    You can find more information about CVE-2023-23912 in the security advisory bulletin released by the community.ui.com. Please refer to the following link: [Security Advisory Bulletin](https://community.ui.com/releases/Security-Advisory-Bulletin-028-028/696e4e3b-718c-4da4-9a21-965a85633b5f).

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