CVE-2021-28845

Null Pointer Dereference vulnerability exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service by sending the POST request to apply_cgi via the lang action without a language key.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/zyw-200/EQUAFL/blob/main/TRENDnet%20ticket.pdf	Third Party Advisory
https://github.com/zyw-200/EQUAFL/blob/main/TRENDnet%20ticket.pdf	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:trendnet:tew-755ap_firmware:1.11b03:*:*:*:*:*:*:*

cpe:2.3:h:trendnet:tew-755ap:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:trendnet:tew-755ap2kac_firmware:1.11b03:*:*:*:*:*:*:*

cpe:2.3:h:trendnet:tew-755ap2kac:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:trendnet:tew-821dap2kac_firmware:1.11b03:*:*:*:*:*:*:*

cpe:2.3:h:trendnet:tew-821dap2kac:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:trendnet:tew-825dap_firmware:1.11b03:*:*:*:*:*:*:*

cpe:2.3:h:trendnet:tew-825dap:-:*:*:*:*:*:*:*

History

21 Nov 2024, 06:00

Type	Values Removed	Values Added
References	~~() https://github.com/zyw-200/EQUAFL/blob/main/TRENDnet%20ticket.pdf - Third Party Advisory~~	() https://github.com/zyw-200/EQUAFL/blob/main/TRENDnet%20ticket.pdf - Third Party Advisory

Information

Published : 2021-08-10 20:15

Updated : 2024-11-21 06:00

NVD link : CVE-2021-28845

Mitre link : CVE-2021-28845

CVE.ORG link : CVE-2021-28845

JSON object : View

Products Affected

trendnet

tew-755ap2kac_firmware
tew-825dap_firmware
tew-821dap2kac
tew-755ap2kac
tew-755ap_firmware
tew-821dap2kac_firmware
tew-755ap
tew-825dap

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2021-28845", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-08-10T20:15:08.377", "references": [{"url": "https://github.com/zyw-200/EQUAFL/blob/main/TRENDnet%20ticket.pdf", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/zyw-200/EQUAFL/blob/main/TRENDnet%20ticket.pdf", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "Null Pointer Dereference vulnerability exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service by sending the POST request to apply_cgi via the lang action without a language key."}, {"lang": "es", "value": "Existe una vulnerabilidad de desviaci\u00f3n de puntero nulo en TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03 y TEW-825DAP 1.11B03, que podr\u00eda permitir a un usuario malintencionado remoto causar una denegaci\u00f3n de servicio al enviar la solicitud POST a apply_cgi a trav\u00e9s de la acci\u00f3n lang sin una clave de idioma"}], "lastModified": "2024-11-21T06:00:19.233", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:trendnet:tew-755ap_firmware:1.11b03:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CA501A20-8560-4D43-9879-EE82620EB46E"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:trendnet:tew-755ap:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "05525ACA-056A-4CC9-B012-C33BFF6C223F"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:trendnet:tew-755ap2kac_firmware:1.11b03:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "49A6918E-F09C-4D8C-90D7-B8FA7368FB44"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:trendnet:tew-755ap2kac:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B8D2890D-367F-4243-833C-394322465EE5"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:trendnet:tew-821dap2kac_firmware:1.11b03:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C2861898-3D54-49E8-A991-C38286E308DC"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:trendnet:tew-821dap2kac:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "80556924-8C4F-41BA-961A-6CB107C0D986"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:trendnet:tew-825dap_firmware:1.11b03:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "99DAEB6A-ADDC-4D5E-AE2B-4BD80937BD7A"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:trendnet:tew-825dap:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "3E9C0938-FDAF-424E-951A-02665AD3EFB4"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}