CVE-2021-21960

A stack-based buffer overflow vulnerability exists in both the LLMNR functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted network packet can lead to remote code execution. An attacker can send a malicious packet to trigger this vulnerability.

CVSS v3 10.0 CRITICAL
CVSS v2.0 7.5 HIGH

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:*

cpe:2.3:h:sealevel:seaconnect_370w:-:*:*:*:*:*:*:*

History

26 Jun 2023, 18:59

Type	Values Removed	Values Added
CWE	~~CWE-787~~	CWE-1284

Information

Published : 2022-02-04 23:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-21960

Mitre link : CVE-2021-21960

CVE.ORG link : CVE-2021-21960

JSON object : View

Products Affected

sealevel

seaconnect_370w
seaconnect_370w_firmware

CWE

CWE-1284

Improper Validation of Specified Quantity in Input

CWE-121

Stack-based Buffer Overflow

{"id": "CVE-2021-21960", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "talos-cna@cisco.com", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 10.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.9}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 10.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.9}]}, "published": "2022-02-04T23:15:10.483", "references": [{"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1389", "tags": ["Exploit", "Third Party Advisory"], "source": "talos-cna@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-1284"}]}, {"type": "Secondary", "source": "talos-cna@cisco.com", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow vulnerability exists in both the LLMNR functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted network packet can lead to remote code execution. An attacker can send a malicious packet to trigger this vulnerability."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria en la funcionalidad LLMNR de Sealevel Systems, Inc. SeaConnect 370W versi\u00f3n v1.3.34. Un paquete de red especialmente dise\u00f1ado puede conllevar a una ejecuci\u00f3n de c\u00f3digo remota. Un atacante puede enviar un paquete malicioso para desencadenar esta vulnerabilidad"}], "lastModified": "2023-06-26T18:59:22.310", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "06014E46-DFB2-45C7-99FD-972EBCCC5FD3"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:sealevel:seaconnect_370w:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "D8CC996D-F36A-4B26-BD50-68F88D24D001"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "talos-cna@cisco.com"}