CVE-2022-20686

https://notcve.org/view.php?id=CVE-2022-20686

Multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) functionality of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device and cause the LLDP service to restart. These vulnerabilities are due to missing length validation of certain LLDP packet header fields. An attacker could exploit these vulnerabilities by sending a malicious LLDP packet to an affected device. A successful exploit could allow the attacker to execute code on the affected device and cause LLDP to restart unexpectedly, resulting in a denial of service (DoS) condition. Múltiples vulnerabilidades en la funcionalidad del Link Layer Discovery Protocol (LLDP) del firmware de Cisco ATA 190 Series Analog Telephone Adapter podrían permitir que un atacante remoto no autenticado ejecute código arbitrario en un dispositivo afectado y provoque que el servicio LLDP se reinicie. Estas vulnerabilidades se deben a la falta de validación de longitud de ciertos campos de encabezado de paquetes LLDP. • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-GEZYVvs • CWE-130: Improper Handling of Length Parameter Inconsistency CWE-1284: Improper Validation of Specified Quantity in Input •