CVE-2021-1439

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This vulnerability is due to insufficient input validation of incoming mDNS traffic. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device through a wireless network that is configured in FlexConnect local switching mode or through a wired network on a configured mDNS VLAN. A successful exploit could allow the attacker to cause the access point (AP) to reboot, resulting in a DoS condition."}, {"lang": "es", "value": "Una vulnerabilidad en la funcionalidad multicast DNS (mDNS) gateway del Software Cisco Aironet Series Access Points, podr\u00eda permitir a un atacante adyacente no autenticado causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad es debido a una comprobaci\u00f3n insuficiente de la entrada del tr\u00e1fico mDNS entrante. Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de un paquete mDNS dise\u00f1ado hacia un dispositivo afectado por medio de una red inal\u00e1mbrica configurada en el modo de conmutaci\u00f3n local FlexConnect o mediante una red cableada en una VLAN mDNS configurada. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar que el punto de acceso (AP) se reinicie, lo que resultar\u00eda en una condici\u00f3n de DoS"}], "lastModified": "2024-11-21T05:44:22.010", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cisco:aironet_access_point_software:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D48036EE-DE42-412A-B3C9-CBCE7414DB33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "1952B64C-4AE0-4CCB-86C5-8D1FF6A12822"}, {"criteria": "cpe:2.3:h:cisco:aironet_1540:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "72BFEED4-7AD7-406F-A044-BDEA98133711"}, {"criteria": "cpe:2.3:h:cisco:aironet_1560:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "8191FD87-4E55-4F38-8DB0-7E6772AD075B"}, {"criteria": "cpe:2.3:h:cisco:aironet_1800:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "02F4C00A-D1E2-4B21-A14E-F30B4B818493"}, {"criteria": "cpe:2.3:h:cisco:aironet_2800:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "3C28A6B0-10FF-4C6D-8527-2313E163C98E"}, {"criteria": "cpe:2.3:h:cisco:aironet_3800:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7636F7E2-E386-4F8C-A0C5-F510D8E21DA4"}, {"criteria": "cpe:2.3:h:cisco:aironet_4800:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "C4D8A4CB-5B80-4332-BCBC-DA18AD94D215"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9100:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "749040C6-A21A-4EF3-8213-42EE01CFA303"}, {"criteria": "cpe:2.3:h:cisco:catalyst_iw6300:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "C559D6F7-B432-4A2A-BE0E-9697CC412C70"}, {"criteria": "cpe:2.3:h:cisco:esw6300:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "09051BC5-CFE7-43EF-975D-BF77724E8776"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:catalyst_9800_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8BDFBA81-4DF6-4BC8-8D16-2520510ADE2E", "versionEndExcluding": "17.3.3", "versionStartIncluding": "17.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:catalyst_9800:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A48E6CF0-7A3B-4D11-8D02-0CD38F2420E9"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ykramarz@cisco.com"}