CVE-2023-6399: Medium severity zyxel zywall atp100 firmware vulnerability
Published 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.
Affected Software
97 affected components
All of the following
Any of the following
Zyxel Atp100 Firmware>=5.10<5.37
Zyxel Atp100 Firmware=5.37
Zyxel Atp100 Firmware=5.37-patch1
Zyxel Atp100
All of the following
Any of the following
Zyxel Atp100w Firmware>=5.10<5.37
Zyxel Atp100w Firmware=5.37
Zyxel Atp100w Firmware=5.37-patch1
Zyxel Atp100w
All of the following
Any of the following
Zyxel Atp200 Firmware>=5.10<5.37
Zyxel Atp200 Firmware=5.37
Zyxel Atp200 Firmware=5.37-patch1
Zyxel ATP200
All of the following
Any of the following
Zyxel Atp500 Firmware>=5.10<5.37
Zyxel Atp500 Firmware=5.37
Zyxel Atp500 Firmware=5.37-patch1
Zyxel ATP500
All of the following
Any of the following
Zyxel Atp700 Firmware>=5.10<5.37
Zyxel Atp700 Firmware=5.37
Zyxel Atp700 Firmware=5.37-patch1
Zyxel Atp700
All of the following
Any of the following
Zyxel Atp800 Firmware>=5.10<5.37
Zyxel Atp800 Firmware=5.37
Zyxel Atp800 Firmware=5.37-patch1
Zyxel ATP800
All of the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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
All of the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
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 the following
Any of the following
Zyxel Uos=1.10
Zyxel Uos=1.10-patch1
Any of the following
Zyxel Usg Flex 100h
Zyxel Usg Flex 100hp
Zyxel Usg Flex 200h
Zyxel Usg Flex 200hp
Zyxel Usg Flex 500h
Zyxel Usg Flex 700h
Zyxel ATP series firmware>=4.32<=5.37 Patch 1
Zyxel USG FLEX series firmware>=4.50<=5.37 Patch 1
Zyxel USG FLEX 50(W) series firmware>=4.16<=5.37 Patch 1
Zyxel USG20(W)-VPN series firmware>=4.16<=5.37 Patch 1
Zyxel USG FLEX H series firmware>=1.10<=1.10 Patch 1
Event History
Feb 20, 2024
CVE Published
via MITRE·01:42 AM
Data Sourced
via MITRE·01:42 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·02:15 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2023-6399?
CVE-2023-6399 has a critical severity rating due to its potential impact when exploited.
2
How do I fix CVE-2023-6399?
To fix CVE-2023-6399, update the affected Zyxel firmware versions to the patched releases.
3
Which products are affected by CVE-2023-6399?
CVE-2023-6399 affects multiple Zyxel products including the ATP series, USG FLEX series, and USG20(VPN) series firmware versions.
4
What are the firmware versions impacted by CVE-2023-6399?
The affected firmware versions range from 4.32 to 5.37 Patch 1 for the specified Zyxel devices.
5
Can CVE-2023-6399 lead to a remote code execution exploit?
Yes, CVE-2023-6399 can be exploited through a format string vulnerability, potentially leading to remote code execution.