CVE-2022-0342 : An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL se

An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device.

Published 2022-03-28 13:15:08

Updated 2022-04-04 17:27:58

Source Zyxel Corporation

View at NVD, CVE.org

Vulnerability category: BypassGain privilege

Products affected by CVE-2022-0342

Zyxel » Zywall 110 Firmware
Versions from including (>=) 4.20 and before (<) 4.71
cpe:2.3:o:zyxel:zywall_110_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Zywall 110 » Version: N/A
Zyxel » Zywall 1100 Firmware
Versions from including (>=) 4.20 and before (<) 4.71
cpe:2.3:o:zyxel:zywall_1100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Zywall 1100 » Version: N/A
Zyxel » Zywall 310 Firmware
Versions from including (>=) 4.20 and before (<) 4.71
cpe:2.3:o:zyxel:zywall_310_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Zywall 310 » Version: N/A
Zyxel » Atp200 Firmware
Versions from including (>=) 4.32 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp200 » Version: N/A
Zyxel » Atp500 Firmware
Versions from including (>=) 4.32 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp500 » Version: N/A
Zyxel » Atp800 Firmware
Versions from including (>=) 4.32 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp800 » Version: N/A
Zyxel » Usg40 Firmware
Versions from including (>=) 4.20 and before (<) 4.71
cpe:2.3:o:zyxel:usg40_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg40 » Version: N/A
Zyxel » Usg40w Firmware
Versions from including (>=) 4.20 and before (<) 4.71
cpe:2.3:o:zyxel:usg40w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg40w » Version: N/A
Zyxel » Usg60 Firmware
Versions from including (>=) 4.20 and before (<) 4.71
cpe:2.3:o:zyxel:usg60_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg60 » Version: N/A
Zyxel » Usg60w Firmware
Versions from including (>=) 4.20 and before (<) 4.71
cpe:2.3:o:zyxel:usg60w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg60w » Version: N/A
Zyxel » Vpn50 Firmware
Versions from including (>=) 4.30 and before (<) 5.21
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn50 » Version: N/A
Zyxel » Vpn100 Firmware
Versions from including (>=) 4.30 and before (<) 5.21
cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn100 » Version: N/A
Zyxel » Vpn300 Firmware
Versions from including (>=) 4.30 and before (<) 5.21
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn300 » Version: N/A
Zyxel » Atp100 Firmware
Versions from including (>=) 4.32 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100 » Version: N/A
Zyxel » Vpn1000 Firmware
Versions from including (>=) 4.30 and before (<) 5.21
cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Vpn1000 » Version: N/A
Zyxel » Usg Flex 100 Firmware
Versions from including (>=) 4.50 and up to, including, (<=) 5.20
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 200 Firmware
Versions from including (>=) 4.50 and up to, including, (<=) 5.20
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 500 Firmware
Versions from including (>=) 4.50 and up to, including, (<=) 5.20
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 100w Firmware
Versions from including (>=) 4.50 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 100w » Version: N/A
Zyxel » Usg Flex 700 Firmware
Versions from including (>=) 4.50 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Usg Flex 700 » Version: N/A
Zyxel » Atp100w Firmware
Versions from including (>=) 4.32 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp100w » Version: N/A
Zyxel » Atp700 Firmware
Versions from including (>=) 4.32 and up to, including, (<=) 5.20
cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Atp700 » Version: N/A
Zyxel » Nsg300 Firmware
Versions from including (>=) 1.20 and before (<) 1.33
cpe:2.3:o:zyxel:nsg300_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Nsg300 » Version: N/A
Zyxel » Nsg300 Firmware » Version: 1.33
cpe:2.3:o:zyxel:nsg300_firmware:1.33:-:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Nsg300 » Version: N/A
Zyxel » Nsg300 Firmware » Version: 1.33 Update P4
cpe:2.3:o:zyxel:nsg300_firmware:1.33:p4:*:*:*:*:*:*
Matching versions
When used together with: Zyxel » Nsg300 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2022-0342

EPSS FAQ

5.82%

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

~ 94 %

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

CVSS scores for CVE-2022-0342

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
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-2022-0342

CWE-287 Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Assigned by:
- nvd@nist.gov (Primary)
- security@zyxel.com.tw (Secondary)

References for CVE-2022-0342

https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml

404 Error | Zyxel
Vendor Advisory

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Vulnerability Details : CVE-2022-0342

Products affected by CVE-2022-0342

Exploit prediction scoring system (EPSS) score for CVE-2022-0342

CVSS scores for CVE-2022-0342

CWE ids for CVE-2022-0342

References for CVE-2022-0342