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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: 6.5EPSS: 0%CPEs: 100EXPL: 0

A vulnerability in the management interface of Cisco Application Policy Infrastructure Controller (APIC) software could allow an unauthenticated, adjacent attacker to gain unauthorized access on an affected device. The vulnerability is due to a lack of proper access control mechanisms for IPv6 link-local connectivity imposed on the management interface of an affected device. An attacker on the same physical network could exploit this vulnerability by attempting to connect to the IPv6 link-local address on the affected device. A successful exploit could allow the attacker to bypass default access control restrictions on an affected device. Cisco Application Policy Infrastructure Controller (APIC) devices running versions prior to 4.2(0.21c) are affected. • http://www.securityfocus.com/bid/107317 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-apic-ipv6 • CWE-284: Improper Access Control •

CVSS: 7.8EPSS: 0%CPEs: 38EXPL: 0

A vulnerability in the controller authorization functionality of Cisco Nexus 9000 Series ACI Mode Switch Software could allow an authenticated, local attacker to escalate standard users with root privilege on an affected device. The vulnerability is due to a misconfiguration of certain sudoers files for the bashroot component on an affected device. An attacker could exploit this vulnerability by authenticating to the affected device with a crafted user ID, which may allow temporary administrative access to escalate privileges. A successful exploit could allow the attacker to escalate privileges on an affected device. This Vulnerability has been fixed in version 4.0(1h) Una vulnerabilidad en la funcionalidad de autorización de Cisco Nexus 9000 Series ACI Mode Switch Software puede permitir a un atacante local autenticado escalar usuarios estándares con privilegios root en un dispositivo afectado. • http://www.securityfocus.com/bid/107312 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-aci-controller-privsec • CWE-16: Configuration •