CVE-2021-4029

A command injection vulnerability in the CGI program of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary OS commands via a LAN interface.

CVSS v3 8.8 HIGH
CVSS v2.0 8.3 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

8.3^/10

CVSS v2.0 : HIGH

Vector : AV:A/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 6.5 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtml	Vendor Advisory
https://www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtml	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:zyxel:nbg6816_firmware:1.00\(aawb.10\)c0:*:*:*:*:*:*:*

cpe:2.3:h:zyxel:nbg6816:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:zyxel:nbg6817_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:zyxel:nbg6817:-:*:*:*:*:*:*:*

History

21 Nov 2024, 06:36

Type	Values Removed	Values Added
References	~~() https://www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtml - Vendor Advisory~~	() https://www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtml - Vendor Advisory

Information

Published : 2022-02-24 15:15

Updated : 2024-11-21 06:36

NVD link : CVE-2021-4029

Mitre link : CVE-2021-4029

CVE.ORG link : CVE-2021-4029

JSON object : View

Products Affected

zyxel

nbg6817_firmware
nbg6816
nbg6816_firmware
nbg6817

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

{"id": "CVE-2021-4029", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 8.3, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 6.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "security@zyxel.com.tw", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2022-02-24T15:15:25.150", "references": [{"url": "https://www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtml", "tags": ["Vendor Advisory"], "source": "security@zyxel.com.tw"}, {"url": "https://www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtml", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@zyxel.com.tw", "description": [{"lang": "en", "value": "CWE-78"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "A command injection vulnerability in the CGI program of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary OS commands via a LAN interface."}, {"lang": "es", "value": "Una vulnerabilidad de inyecci\u00f3n de comandos en el programa CGI del firmware Zyxel ARMOR Z1/Z2 podr\u00eda permitir a un atacante ejecutar comandos arbitrarios del sistema operativo por medio de una interfaz LAN"}], "lastModified": "2024-11-21T06:36:45.207", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:nbg6816_firmware:1.00\\(aawb.10\\)c0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "51FE7589-8B85-40D9-A361-ECB2DC902D72"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:nbg6816:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "DEBACD2B-7C99-437F-B5C7-0EEA387DFE78"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:nbg6817_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7A4183C2-A488-4A80-AFDD-3CBC90D912D0", "versionEndExcluding": "1.00\\(abcs.11\\)c0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:nbg6817:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "1DB033C4-F082-46B1-985C-4FDFD62FFC70"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@zyxel.com.tw"}