CVE-2023-33010 : A buffer overflow vulnerability in the ID processing function in Zyxel ATP serie

A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.

Published 2023-05-24 13:15:10

Updated 2023-06-07 18:20:46

Source Zyxel Corporation

View at NVD, CVE.org

Vulnerability category: OverflowExecute codeDenial of service

Products affected by CVE-2023-33010

Zyxel » Usg 40 Firmware
Versions from including (>=) 4.25 and before (<) 4.73
cpe:2.3:o:zyxel:usg_40_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 40 » Version: N/A
Zyxel » Usg 40 Firmware » Version: 4.73
cpe:2.3:o:zyxel:usg_40_firmware:4.73:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 40 » Version: N/A
Zyxel » Usg 40 Firmware » Version: 4.73 Update Patch1
cpe:2.3:o:zyxel:usg_40_firmware:4.73:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 40 » Version: N/A
Zyxel » Usg 40w Firmware
Versions from including (>=) 4.25 and before (<) 4.73
cpe:2.3:o:zyxel:usg_40w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 40w » Version: N/A
Zyxel » Usg 40w Firmware » Version: 4.73
cpe:2.3:o:zyxel:usg_40w_firmware:4.73:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 40w » Version: N/A
Zyxel » Usg 40w Firmware » Version: 4.73 Update Patch1
cpe:2.3:o:zyxel:usg_40w_firmware:4.73:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 40w » Version: N/A
Zyxel » Usg 60 Firmware
Versions from including (>=) 4.25 and before (<) 4.73
cpe:2.3:o:zyxel:usg_60_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 60 » Version: N/A
Zyxel » Usg 60 Firmware » Version: 4.73
cpe:2.3:o:zyxel:usg_60_firmware:4.73:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 60 » Version: N/A
Zyxel » Usg 60 Firmware » Version: 4.73 Update Patch1
cpe:2.3:o:zyxel:usg_60_firmware:4.73:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 60 » Version: N/A
Zyxel » Usg 60w Firmware
Versions from including (>=) 4.25 and before (<) 4.73
cpe:2.3:o:zyxel:usg_60w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 60w » Version: N/A
Zyxel » Usg 60w Firmware » Version: 4.73
cpe:2.3:o:zyxel:usg_60w_firmware:4.73:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 60w » Version: N/A
Zyxel » Usg 60w Firmware » Version: 4.73 Update Patch1
cpe:2.3:o:zyxel:usg_60w_firmware:4.73:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 60w » Version: N/A
Zyxel » Usg 20w-vpn Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 20w-vpn » Version: N/A
Zyxel » Usg 20w-vpn Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg 20w-vpn » Version: N/A
Zyxel » Atp200 Firmware
Versions from including (>=) 4.32 and before (<) 5.36
cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp200 » Version: N/A
Zyxel » Atp200 Firmware » Version: 5.36
cpe:2.3:o:zyxel:atp200_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp200 » Version: N/A
Zyxel » Atp200 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:atp200_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp200 » Version: N/A
Zyxel » Atp500 Firmware
Versions from including (>=) 4.32 and before (<) 5.36
cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp500 » Version: N/A
Zyxel » Atp500 Firmware » Version: 5.36
cpe:2.3:o:zyxel:atp500_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp500 » Version: N/A
Zyxel » Atp500 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:atp500_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp500 » Version: N/A
Zyxel » Atp800 Firmware
Versions from including (>=) 4.32 and before (<) 5.36
cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp800 » Version: N/A
Zyxel » Atp800 Firmware » Version: 5.36
cpe:2.3:o:zyxel:atp800_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp800 » Version: N/A
Zyxel » Atp800 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:atp800_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp800 » Version: N/A
Zyxel » Usg20-vpn Firmware
Versions from including (>=) 4.30 and before (<) 5.36
cpe:2.3:o:zyxel:usg20-vpn_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg20-vpn » Version: N/A
Zyxel » Usg20-vpn Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg20-vpn_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg20-vpn » Version: N/A
Zyxel » Usg20-vpn Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg20-vpn_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg20-vpn » Version: N/A
Zyxel » Vpn50 Firmware
Versions from including (>=) 4.30 and before (<) 5.36
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn50 » Version: N/A
Zyxel » Vpn50 Firmware » Version: 5.36
cpe:2.3:o:zyxel:vpn50_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn50 » Version: N/A
Zyxel » Vpn50 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:vpn50_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn50 » Version: N/A
Zyxel » Vpn100 Firmware
Versions from including (>=) 4.30 and before (<) 5.36
cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn100 » Version: N/A
Zyxel » Vpn100 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:vpn100_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn100 » Version: N/A
Zyxel » Vpn100 Firmware » Version: 5.36
cpe:2.3:o:zyxel:vpn100_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn100 » Version: N/A
Zyxel » Vpn300 Firmware
Versions from including (>=) 4.30 and before (<) 5.36
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn300 » Version: N/A
Zyxel » Vpn300 Firmware » Version: 5.36
cpe:2.3:o:zyxel:vpn300_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn300 » Version: N/A
Zyxel » Vpn300 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:vpn300_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn300 » Version: N/A
Zyxel » Atp100 Firmware
Versions from including (>=) 4.32 and before (<) 5.36
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100 » Version: N/A
Zyxel » Atp100 Firmware » Version: 5.36
cpe:2.3:o:zyxel:atp100_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100 » Version: N/A
Zyxel » Atp100 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:atp100_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100 » Version: N/A
Zyxel » Vpn1000 Firmware
Versions from including (>=) 4.30 and before (<) 5.36
cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn1000 » Version: N/A
Zyxel » Vpn1000 Firmware » Version: 5.36
cpe:2.3:o:zyxel:vpn1000_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn1000 » Version: N/A
Zyxel » Vpn1000 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:vpn1000_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn1000 » Version: N/A
Zyxel » Usg Flex 100 Firmware
Versions from including (>=) 4.50 and before (<) 5.36
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 100 » Version: N/A
Zyxel » Usg Flex 100 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_flex_100_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 100 » Version: N/A
Zyxel » Usg Flex 100 Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_flex_100_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 100 » Version: N/A
Zyxel » Usg Flex 200 Firmware
Versions from including (>=) 4.50 and before (<) 5.36
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 200 » Version: N/A
Zyxel » Usg Flex 200 Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_flex_200_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 200 » Version: N/A
Zyxel » Usg Flex 200 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_flex_200_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 200 » Version: N/A
Zyxel » Usg Flex 500 Firmware
Versions from including (>=) 4.50 and before (<) 5.36
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 500 » Version: N/A
Zyxel » Usg Flex 500 Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_flex_500_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 500 » Version: N/A
Zyxel » Usg Flex 500 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_flex_500_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 500 » Version: N/A
Zyxel » Usg Flex 100w Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 100w » Version: N/A
Zyxel » Usg Flex 100w Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 100w » Version: N/A
Zyxel » Usg Flex 700 Firmware
Versions from including (>=) 4.50 and before (<) 5.36
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 700 » Version: N/A
Zyxel » Usg Flex 700 Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_flex_700_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 700 » Version: N/A
Zyxel » Usg Flex 700 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_flex_700_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 700 » Version: N/A
Zyxel » Atp100w Firmware
Versions from including (>=) 4.32 and before (<) 5.36
cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100w » Version: N/A
Zyxel » Atp100w Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:atp100w_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100w » Version: N/A
Zyxel » Atp100w Firmware » Version: 5.36
cpe:2.3:o:zyxel:atp100w_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100w » Version: N/A
Zyxel » Atp700 Firmware
Versions from including (>=) 4.32 and before (<) 5.36
cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp700 » Version: N/A
Zyxel » Atp700 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:atp700_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp700 » Version: N/A
Zyxel » Atp700 Firmware » Version: 5.36
cpe:2.3:o:zyxel:atp700_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp700 » Version: N/A
Zyxel » Usg Flex 50w Firmware
Versions from including (>=) 4.25 and before (<) 5.36
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 50w » Version: N/A
Zyxel » Usg Flex 50w Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 50w » Version: N/A
Zyxel » Usg Flex 50w Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 50w » Version: N/A
Zyxel » Usg Flex 50 Firmware » Version: 5.36
cpe:2.3:o:zyxel:usg_flex_50_firmware:5.36:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 50 » Version: N/A
Zyxel » Usg Flex 50 Firmware » Version: 5.36 Update Patch1
cpe:2.3:o:zyxel:usg_flex_50_firmware:5.36:patch1:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 50 » Version: N/A

CVE-2023-33010 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

Zyxel Multiple Firewalls Buffer Overflow Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the ID processing function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.

Notes:

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls; https://nvd.nist.gov/vuln/detail/CVE-2023-33010

Added on 2023-06-05 Action due date 2023-06-26

Exploit prediction scoring system (EPSS) score for CVE-2023-33010

EPSS FAQ

2.29%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 90 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-33010

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	Zyxel Corporation
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2023-33010

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.
Assigned by:
- nvd@nist.gov (Primary)
- security@zyxel.com.tw (Secondary)

References for CVE-2023-33010

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls

Zyxel security advisory for multiple buffer overflow vulnerabilities of firewalls | Zyxel Networks
Vendor Advisory

CVEs referencing this url