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CVSS: 8.1EPSS: 0%CPEs: 29EXPL: 0

A vulnerability in the Transport Layer Security (TLS) certificate validation functionality of Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an unauthenticated, remote attacker to perform insecure TLS client authentication on an affected device. The vulnerability is due to insufficient TLS client certificate validations for certificates sent between the various components of an ACI fabric. An attacker who has possession of a certificate that is trusted by the Cisco Manufacturing CA and the corresponding private key could exploit this vulnerability by presenting a valid certificate while attempting to connect to the targeted device. An exploit could allow the attacker to gain full control of all other components within the ACI fabric of an affected device. Una vulnerabilidad en la funcionalidad de validación de certificados de Transport Layer Security (TLS) del software Nexus 9000 Series Switch de Cisco en modo Application Centric Infrastructure (ACI), podría permitir a un atacante remoto no autenticado realizar una autenticación no segura del cliente TLS en un dispositivo afectado. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-aci-insecure-fabric • CWE-295: Improper Certificate Validation •

CVSS: 7.8EPSS: 0%CPEs: 28EXPL: 0

A vulnerability in the background operations functionality of Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an authenticated, local attacker to gain elevated privileges as root on an affected device. The vulnerability is due to insufficient validation of user-supplied files on an affected device. An attacker could exploit this vulnerability by logging in to the CLI of the affected device and creating a crafted file in a specific directory on the filesystem. A successful exploit could allow the attacker to execute arbitrary operating system commands as root on an affected device. Una vulnerabilidad en la funcionalidad background operations de Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) podría permitir a un atacante local identificado conseguir privilegios elevados tipo root en un dispositivo afectado. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-aci-hw-clock-util • CWE-20: Improper Input Validation CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 4.3EPSS: 0%CPEs: 28EXPL: 0

A vulnerability in Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an authenticated, remote attacker to access sensitive information. The vulnerability occurs because the affected software does not properly validate user-supplied input. An attacker could exploit this vulnerability by issuing certain commands with filtered query results on the device. This action may cause returned messages to display confidential system information. A successful exploit could allow the attacker to read sensitive information on the device. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-aci-filter-query • CWE-20: Improper Input Validation CWE-399: Resource Management Errors •

CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 0

A vulnerability in the Tetration Analytics agent for Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an authenticated, local attacker to execute arbitrary code as root. The vulnerability is due to an incorrect permissions setting. An attacker could exploit this vulnerability by replacing valid agent files with malicious code. A successful exploit could result in the execution of code supplied by the attacker. Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running versions prior to 7.0(3)I7(5). • http://www.securityfocus.com/bid/107322 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-tetra-ace • CWE-275: Permission Issues CWE-732: Incorrect Permission Assignment for Critical Resource •

CVSS: 8.6EPSS: 0%CPEs: 43EXPL: 0

A vulnerability in the Cisco Fabric Services component of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a buffer overflow, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Cisco Fabric Services packets. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow, resulting in process crashes and a DoS condition on the device. MDS 9000 Series Multilayer Switches are affected running software versions prior to 6.2(25), 8.1(1b), 8.3(1). • http://www.securityfocus.com/bid/107395 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-fabric-dos • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •