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
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
CWE CWE-120
CPE cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp500:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nxc5500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn2s:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp100w:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_50:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn_300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nxc5500:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_2200-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_300:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nxc2500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nxc2500:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp200:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp800:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn2s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn50:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn_100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_vpn300:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall_atp700:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_vpn_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:zywall_atp200_firmware:*:*:*:*:*:*:*:*

17 Jul 2023, 18:58

Type Values Removed Values Added
New CVE
Information

Published : 2023-07-17 18:15

Updated : 2024-02-05 00:01

NVD link : CVE-2023-34140

Mitre link : CVE-2023-34140

CVE.ORG link : CVE-2023-34140

JSON object : View

Products Affected

zyxel

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

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