CVE-2023-34140

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-34140
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.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers Vendor Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:zyxel:usg_2200-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:zyxel:zywall_atp100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp100:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:zyxel:zywall_atp100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp100w:-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:zyxel:zywall_atp200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp200:-:*:*:*:*:*:*:*

Configuration 13 (hide)

AND
cpe:2.3:o:zyxel:zywall_atp500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp500:-:*:*:*:*:*:*:*

Configuration 14 (hide)

AND
cpe:2.3:o:zyxel:zywall_atp700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp700:-:*:*:*:*:*:*:*

Configuration 15 (hide)

AND
cpe:2.3:o:zyxel:zywall_atp800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp800:-:*:*:*:*:*:*:*

Configuration 16 (hide)

AND
cpe:2.3:o:zyxel:zywall_vpn100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn100:-:*:*:*:*:*:*:*

Configuration 17 (hide)

AND
cpe:2.3:o:zyxel:zywall_vpn2s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn2s:-:*:*:*:*:*:*:*

Configuration 18 (hide)

AND
cpe:2.3:o:zyxel:zywall_vpn300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn300:-:*:*:*:*:*:*:*

Configuration 19 (hide)

AND
cpe:2.3:o:zyxel:zywall_vpn50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn50:-:*:*:*:*:*:*:*

Configuration 20 (hide)

AND
cpe:2.3:o:zyxel:zywall_vpn_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_100:-:*:*:*:*:*:*:*

Configuration 21 (hide)

AND
cpe:2.3:o:zyxel:zywall_vpn_300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_300:-:*:*:*:*:*:*:*

Configuration 22 (hide)

AND
cpe:2.3:o:zyxel:zywall_vpn_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_50:-:*:*:*:*:*:*:*

Configuration 23 (hide)

AND
cpe:2.3:o:zyxel:nxc2500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nxc2500:-:*:*:*:*:*:*:*

Configuration 24 (hide)

AND
cpe:2.3:o:zyxel:nxc5500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nxc5500:-:*:*:*:*:*:*:*
History

26 Jul 2023, 21:29

Type Values Removed Values Added
First Time Zyxel
Zyxel zywall Atp100w
Zyxel usg Flex 200 Firmware
Zyxel zywall Atp500 Firmware
Zyxel zywall Atp200 Firmware
Zyxel nxc2500
Zyxel zywall Vpn 50
Zyxel zywall Atp700 Firmware
Zyxel zywall Vpn 100 Firmware
Zyxel usg Flex 500
Zyxel usg Flex 700 Firmware
Zyxel zywall Vpn300 Firmware
Zyxel zywall Vpn 300 Firmware
Zyxel usg Flex 50w Firmware
Zyxel zywall Vpn300
Zyxel usg Flex 50
Zyxel zywall Vpn 100
Zyxel zywall Atp500
Zyxel nxc5500
Zyxel usg Flex 100
Zyxel zywall Atp100
Zyxel usg 20w-vpn Firmware
Zyxel zywall Atp100w Firmware
Zyxel zywall Vpn50
Zyxel nxc5500 Firmware
Zyxel usg 2200-vpn Firmware
Zyxel usg 20w-vpn
Zyxel usg Flex 500 Firmware
Zyxel zywall Atp200
Zyxel usg Flex 100w Firmware
Zyxel usg Flex 700
Zyxel zywall Atp800 Firmware
Zyxel usg Flex 50 Firmware
Zyxel zywall Vpn2s
Zyxel zywall Atp700
Zyxel usg 2200-vpn
Zyxel usg Flex 200
Zyxel usg Flex 100 Firmware
Zyxel nxc2500 Firmware
Zyxel zywall Atp100 Firmware
Zyxel zywall Vpn2s Firmware
Zyxel zywall Vpn 50 Firmware
Zyxel usg Flex 50w
Zyxel usg Flex 100w
Zyxel zywall Vpn50 Firmware
Zyxel zywall Atp800
Zyxel zywall Vpn100
Zyxel zywall Vpn 300
Zyxel zywall Vpn100 Firmware
CPE cpe:2.3:o:zyxel:usg_2200-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp500:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn_300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp700:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_300:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp200:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn2s:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nxc5500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp100:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn2s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp100w:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp800:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nxc2500:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn300:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn50:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nxc2500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_50:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nxc5500:-:*:*:*:*:*:*:*
CWE CWE-120
References (MISC) https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers - (MISC) https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers - Vendor Advisory

17 Jul 2023, 18:58

Type Values Removed Values Added
New CVE
Information

Published : 2023-07-17 18:15

Updated : 2023-12-10 15:14

NVD link : CVE-2023-34140

Mitre link : CVE-2023-34140

CVE.ORG link : CVE-2023-34140

JSON object : View

Products Affected

zyxel

  • usg_2200-vpn_firmware
  • zywall_atp200
  • zywall_vpn_300_firmware
  • usg_flex_100
  • zywall_atp800
  • usg_flex_50
  • zywall_vpn300
  • usg_flex_100_firmware
  • zywall_atp100_firmware
  • zywall_vpn100_firmware
  • zywall_vpn_100
  • zywall_vpn50_firmware
  • nxc2500
  • zywall_atp100w_firmware
  • usg_20w-vpn_firmware
  • usg_flex_100w_firmware
  • zywall_vpn2s_firmware
  • zywall_vpn_50_firmware
  • zywall_atp700_firmware
  • zywall_vpn100
  • nxc5500
  • zywall_atp500_firmware
  • zywall_vpn_300
  • nxc5500_firmware
  • nxc2500_firmware
  • zywall_vpn_100_firmware
  • usg_flex_500
  • zywall_vpn_50
  • usg_flex_50_firmware
  • usg_2200-vpn
  • usg_flex_50w
  • zywall_atp100
  • zywall_atp800_firmware
  • usg_flex_700
  • usg_flex_100w
  • zywall_atp700
  • usg_20w-vpn
  • zywall_vpn300_firmware
  • zywall_vpn50
  • usg_flex_500_firmware
  • zywall_atp500
  • zywall_atp100w
  • usg_flex_700_firmware
  • zywall_vpn2s
  • usg_flex_200_firmware
  • usg_flex_200
  • usg_flex_50w_firmware
  • zywall_atp200_firmware
CWE
CWE-120

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