CVE-2023-34140

Published: Jul 17, 2023Modified: Nov 21, 2024

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

Source: security@zyxel.com.tw (Secondary)

Description

A buffer overflow vulnerability in the Zyxel ATP series firmware versions 4.32 through 5.36 Patch 2, USG FLEX series firmware versions 4.50 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 4.16 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 4.16 through 5.36 Patch 2, VPN series firmware versions 4.30 through 5.36 Patch 2, NXC2500 firmware versions 6.10(AAIG.0) through 6.10(AAIG.3), and NXC5500 firmware versions 6.10(AAOS.0) through 6.10(AAOS.4), could allow an unauthenticated, LAN-based attacker to cause denial of service (DoS) conditions by sending a crafted request to the CAPWAP daemon.

Affected (24)

Products: Zyxel: Usg 20w Vpn Firmware, Usg 2200 Vpn Firmware, Usg Flex 100 Firmware, Usg Flex 100w Firmware, Usg Flex 200 Firmware, Usg Flex 50 Firmware, Usg Flex 500 Firmware, Usg Flex 50w Firmware, Usg Flex 700 Firmware, Zywall Atp100 Firmware, Zywall Atp100w Firmware, Zywall Atp200 Firmware, Zywall Atp500 Firmware, Zywall Atp700 Firmware, Zywall Atp800 Firmware, Zywall Vpn100 Firmware, Zywall Vpn2s Firmware, Zywall Vpn300 Firmware, Zywall Vpn50 Firmware, Zywall Vpn 100 Firmware, Zywall Vpn 300 Firmware, Zywall Vpn 50 Firmware, Nxc2500 Firmware, Nxc5500 Firmware

Zyxel

24 products

Usg 20w Vpn Firmware

Usg 2200 Vpn Firmware

Usg Flex 100 Firmware

Usg Flex 100w Firmware

Usg Flex 200 Firmware

Usg Flex 50 Firmware

Usg Flex 500 Firmware

Usg Flex 50w Firmware

Usg Flex 700 Firmware

Zywall Atp100 Firmware

Zywall Atp100w Firmware

Zywall Atp200 Firmware

Zywall Atp500 Firmware

Zywall Atp700 Firmware

Zywall Atp800 Firmware

Zywall Vpn100 Firmware

Zywall Vpn2s Firmware

Zywall Vpn300 Firmware

Zywall Vpn50 Firmware

Zywall Vpn 100 Firmware

Zywall Vpn 300 Firmware

Zywall Vpn 50 Firmware

Nxc2500 Firmware

Nxc5500 Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg 20w Vpn Firmware	From 4.16 to 5.37

Running on/with	Platform Versions
Zyxel Usg 20w Vpn	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg 2200 Vpn Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Usg 2200 Vpn	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 100 Firmware	From 4.50 to 5.37

Running on/with	Platform Versions
Zyxel Usg Flex 100	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 100w Firmware	From 4.50 to 5.37

Running on/with	Platform Versions
Zyxel Usg Flex 100w	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 200 Firmware	From 4.50 to 5.37

Running on/with	Platform Versions
Zyxel Usg Flex 200	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 50 Firmware	From 4.50 to 5.37

Running on/with	Platform Versions
Zyxel Usg Flex 50	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 500 Firmware	From 4.50 to 5.37

Running on/with	Platform Versions
Zyxel Usg Flex 500	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 50w Firmware	From 4.50 to 5.37

Running on/with	Platform Versions
Zyxel Usg Flex 50w	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 700 Firmware	From 4.50 to 5.37

Running on/with	Platform Versions
Zyxel Usg Flex 700	All versions

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Atp100 Firmware	From 4.32 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Atp100	All versions

Configuration K

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Atp100w Firmware	From 4.32 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Atp100w	All versions

Configuration L

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Atp200 Firmware	From 4.32 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Atp200	All versions

Configuration M

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Atp500 Firmware	From 4.32 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Atp500	All versions

Configuration N

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Atp700 Firmware	From 4.32 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Atp700	All versions

Configuration O

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Atp800 Firmware	From 4.32 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Atp800	All versions

Configuration P

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Vpn100 Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Vpn100	All versions

Configuration Q

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Vpn2s Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Vpn2s	All versions

Configuration R

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Vpn300 Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Vpn300	All versions

Configuration S

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Vpn50 Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Vpn50	All versions

Configuration T

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Vpn 100 Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Vpn 100	All versions

Configuration U

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Vpn 300 Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Vpn 300	All versions

Configuration V

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Zywall Vpn 50 Firmware	From 4.30 to 5.37

Running on/with	Platform Versions
Zyxel Zywall Vpn 50	All versions

Configuration W

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Nxc2500 Firmware	From 6.10\(aaig.0\) to 6.10\(aaig.3\)

Running on/with	Platform Versions
Zyxel Nxc2500	All versions

Configuration X

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Nxc5500 Firmware	From 6.10\(aaos.0\) to 6.10\(aaos.4\)

Running on/with	Platform Versions
Zyxel Nxc5500	All versions

Related CWEs

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

References (2)

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers

Source: security@zyxel.com.tw

Vendor Advisory

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.