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vuln-nvd/data/2021/CVE-2021-1379.json
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vulnerabilities in the Cisco Discovery Protocol and Link Layer Discovery Protocol (LLDP) implementations for Cisco IP Phone Series 68xx/78xx/88xx could allow an unauthenticated, adjacent attacker to execute code remotely or cause a reload of an affected IP phone.\r\nThese vulnerabilities are due to missing checks when the IP phone processes a Cisco Discovery Protocol or LLDP packet. An attacker could exploit these vulnerabilities by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted IP phone. A successful exploit could allow the attacker to execute code on the affected IP phone or cause it to reload unexpectedly, resulting in a denial of service (DoS) condition.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities."},{"lang":"es","value":"Varias vulnerabilidades en las implementaciones de Cisco Discovery Protocol y Link Layer Discovery Protocol (LLDP) para los teléfonos IP de Cisco de las series 68xx/78xx/88xx podrían permitir que un atacante adyacente no autenticado ejecute código de forma remota o provoque una recarga de un teléfono IP afectado. Estas vulnerabilidades se deben a la falta de comprobaciones cuando el teléfono IP procesa un paquete Cisco Discovery Protocol o LLDP. Un atacante podría explotar estas vulnerabilidades enviando un paquete Cisco Discovery Protocol o LLDP malicioso al teléfono IP de destino. Una explotación exitosa podría permitir al atacante ejecutar código en el teléfono IP afectado o hacer que se recargue inesperadamente, lo que resultaría en una condición de denegación de servicio (DoS). Nota: Cisco Discovery Protocol es un protocolo de capa 2. Para explotar estas vulnerabilidades, un atacante debe estar en el mismo dominio de difusión que el dispositivo afectado (adyacente a la capa 2). Cisco ha publicado actualizaciones de software que solucionan estas vulnerabilidades. No existen workarounds que solucionen estas vulnerabilidades."}],"id":"CVE-2021-1379","lastModified":"2026-06-17T03:31:38.220","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":3.6,"source":"psirt@cisco.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2021-1379","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-11-18T16:22:56.651830Z","version":"2.0.3"}}]},"published":"2024-11-18T16:15:09.310","references":[{"source":"psirt@cisco.com","tags":["Vendor Advisory"],"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-rce-dos-U2PsSkz3"},{"source":"psirt@cisco.com","tags":["Vendor Advisory"],"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-distupd-N87eB6Z3"}],"sourceIdentifier":"psirt@cisco.com","vulnStatus":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-120"}],"source":"psirt@cisco.com","type":"Secondary"}]}