medium
6.5
CWE
134
Advisory Published
Updated

CVE-2023-6399

First published: Tue Feb 20 2024(Updated: )

A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, and USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1 could allow an authenticated IPSec VPN user to cause DoS conditions against the “deviceid” daemon by sending a crafted hostname to an affected device if it has the “Device Insight” feature enabled.

Credit: security@zyxel.com.tw

Affected SoftwareAffected VersionHow to fix
Zyxel ATP series firmware>=4.32<=5.37 Patch 1
>=4.50<=5.37 Patch 1
>=4.16<=5.37 Patch 1
>=4.16<=5.37 Patch 1
>=1.10<=1.10 Patch 1
All of
Any of
Zyxel Atp100 Firmware>=5.10<5.37
Zyxel Atp100 Firmware=5.37
Zyxel Atp100 Firmware=5.37-patch1
Zyxel Atp100
All of
Any of
Zyxel Atp100w Firmware>=5.10<5.37
Zyxel Atp100w Firmware=5.37
Zyxel Atp100w Firmware=5.37-patch1
Zyxel Atp100w
All of
Any of
Zyxel Atp200 Firmware>=5.10<5.37
Zyxel Atp200 Firmware=5.37
Zyxel Atp200 Firmware=5.37-patch1
Zyxel ATP200
All of
Any of
Zyxel Atp500 Firmware>=5.10<5.37
Zyxel Atp500 Firmware=5.37
Zyxel Atp500 Firmware=5.37-patch1
Zyxel Atp500
All of
Any of
Zyxel Atp700 Firmware>=5.10<5.37
Zyxel Atp700 Firmware=5.37
Zyxel Atp700 Firmware=5.37-patch1
Zyxel Atp700
All of
Any of
Zyxel Atp800 Firmware>=5.10<5.37
Zyxel Atp800 Firmware=5.37
Zyxel Atp800 Firmware=5.37-patch1
Zyxel Atp800
All of
Any of
Zyxel Usg Flex 100 Firmware>=5.10<5.37
Zyxel Usg Flex 100 Firmware=5.37
Zyxel Usg Flex 100 Firmware=5.37-patch1
Zyxel Usg Flex 100
All of
Any of
Zyxel Usg Flex 100ax Firmware>=5.10<5.37
Zyxel Usg Flex 100ax Firmware=5.37
Zyxel Usg Flex 100ax Firmware=5.37-patch1
Zyxel Usg Flex 100ax
All of
Any of
Zyxel USG FLEX 100H Firmware>=5.10<5.37
Zyxel USG FLEX 100H Firmware=5.37
Zyxel USG FLEX 100H Firmware=5.37-patch1
Zyxel USG FLEX 100H Firmware
All of
Any of
Zyxel Usg Flex 100w Firmware>=5.10<5.37
Zyxel Usg Flex 100w Firmware=5.37
Zyxel Usg Flex 100w Firmware=5.37-patch1
Zyxel Usg Flex 100w
All of
Any of
Zyxel Usg Flex 200 Firmware>=5.10<5.37
Zyxel Usg Flex 200 Firmware=5.37
Zyxel Usg Flex 200 Firmware=5.37-patch1
Zyxel Usg Flex 200
All of
Any of
Zyxel Usg Flex 200h Firmware>=5.10<5.37
Zyxel Usg Flex 200h Firmware=5.37
Zyxel Usg Flex 200h Firmware=5.37-patch1
Zyxel Usg Flex 200h
All of
Any of
Zyxel USG Flex 200HP Firmware>=5.10<5.37
Zyxel USG Flex 200HP Firmware=5.37
Zyxel USG Flex 200HP Firmware=5.37-patch1
Zyxel Usg Flex 200hp
All of
Any of
Zyxel Usg Flex 500 Firmware>=5.10<5.37
Zyxel Usg Flex 500 Firmware=5.37
Zyxel Usg Flex 500 Firmware=5.37-patch1
Zyxel Usg Flex 500
All of
Any of
Zyxel Usg Flex 500h Firmware>=5.10<5.37
Zyxel Usg Flex 500h Firmware=5.37
Zyxel Usg Flex 500h Firmware=5.37-patch1
Zyxel Usg Flex 500h
All of
Any of
Zyxel Usg Flex 700 Firmware>=5.10<5.37
Zyxel Usg Flex 700 Firmware=5.37
Zyxel Usg Flex 700 Firmware=5.37-patch1
Zyxel Usg Flex 700
All of
Any of
Zyxel Usg Flex 700h Firmware>=5.10<5.37
Zyxel Usg Flex 700h Firmware=5.37
Zyxel Usg Flex 700h Firmware=5.37-patch1
Zyxel Usg Flex 700h
All of
Any of
Zyxel Usg Flex 50 Firmware>=5.10<5.37
Zyxel Usg Flex 50 Firmware=5.37
Zyxel Usg Flex 50 Firmware=5.37-patch1
Zyxel Usg Flex 50
All of
Any of
Zyxel Usg Flex 50w Firmware>=5.10<5.37
Zyxel Usg Flex 50w Firmware=5.37
Zyxel Usg Flex 50w Firmware=5.37-patch1
Zyxel Usg Flex 50w
All of
Any of
Zyxel Usg20-vpn Firmware>=5.10<5.37
Zyxel Usg20-vpn Firmware=5.37
Zyxel Usg20-vpn Firmware=5.37-patch1
Zyxel Usg20-vpn
All of
Any of
Zyxel Usg20w-vpn Firmware>=5.10<5.37
Zyxel Usg20w-vpn Firmware=5.37
Zyxel Usg20w-vpn Firmware=5.37-patch1
Zyxel Usg20w-vpn
All of
Any of
Zyxel Uos=1.10
Zyxel Uos=1.10-patch1
Any of
Zyxel USG FLEX 100H Firmware
Zyxel USG Flex 100HP
Zyxel Usg Flex 200h
Zyxel Usg Flex 200hp
Zyxel Usg Flex 500h
Zyxel Usg Flex 700h

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