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Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Default SSH Key Vulnerability

cisco-sa-20190501-nexus9k-sshkey · Critical · Published · Updated

A vulnerability in the SSH key management for the Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an unauthenticated, remote attacker to connect to the affected system with the privileges of the root user. The vulnerability is due to the presence of a default SSH key pair that is present in all devices. An attacker could exploit this vulnerability by opening an SSH connection via IPv6 to a targeted device using the extracted key materials. An exploit could allow the attacker to access the system with the privileges of the root user. This vulnerability is only exploitable over IPv6; IPv4 is not vulnerable. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-nexus9k-sshkey

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2019-1804
Cisco Bug IDsCSCvo80686
CVSS ScoreBase 9.8
Base 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco NX-OS System Software in ACI Mode 11.0(1b), Cisco NX-OS System Software in ACI Mode 11.0(1c), Cisco NX-OS System Software in ACI Mode 11.0(1d), Cisco NX-OS System Software in ACI Mode 11.0(1e), Cisco NX-OS System Software in ACI Mode 11.0(2j), Cisco NX-OS System Software in ACI Mode 11.0(2m), Cisco NX-OS System Software in ACI Mode 11.0(3f), Cisco NX-OS System Software in ACI Mode 11.0(3i), Cisco NX-OS System Software in ACI Mode 11.0(3k), Cisco NX-OS System Software in ACI Mode 11.0(3n), Cisco NX-OS System Software in ACI Mode 11.0(3o), Cisco NX-OS System Software in ACI Mode 11.0(4h), Cisco NX-OS System Software in ACI Mode 11.0(4o), Cisco NX-OS System Software in ACI Mode 11.0(4q), Cisco NX-OS System Software in ACI Mode 11.1(1j), Cisco NX-OS System Software in ACI Mode 11.1(1o), Cisco NX-OS System Software in ACI Mode 11.1(1r), Cisco NX-OS System Software in ACI Mode 11.1(1s), Cisco NX-OS System Software in ACI Mode 11.1(2h), Cisco NX-OS System Software in ACI Mode 11.1(2i), Cisco NX-OS System Software in ACI Mode 11.1(3f), Cisco NX-OS System Software in ACI Mode 11.1(4e), Cisco NX-OS System Software in ACI Mode 11.1(4f), Cisco NX-OS System Software in ACI Mode 11.1(4g), Cisco NX-OS System Software in ACI Mode 11.1(4i), Cisco NX-OS System Software in ACI Mode 11.1(4l), Cisco NX-OS System Software in ACI Mode 11.1(4m), Cisco NX-OS System Software in ACI Mode 11.2(1i), Cisco NX-OS System Software in ACI Mode 11.2(2g), Cisco NX-OS System Software in ACI Mode 11.2(3c), Cisco NX-OS System Software in ACI Mode 11.2(2h), Cisco NX-OS System Software in ACI Mode 11.2(2i), Cisco NX-OS System Software in ACI Mode 11.2(3e), Cisco NX-OS System Software in ACI Mode 11.2(3h), Cisco NX-OS System Software in ACI Mode 11.2(3m), Cisco NX-OS System Software in ACI Mode 11.2(1k), Cisco NX-OS System Software in ACI Mode 11.2(1m), Cisco NX-OS System Software in ACI Mode 11.2(2j), Cisco NX-OS System Software in ACI Mode 12.0(1m), Cisco NX-OS System Software in ACI Mode 12.0(2g), Cisco NX-OS System Software in ACI Mode 12.0(1n), Cisco NX-OS System Software in ACI Mode 12.0(1o), Cisco NX-OS System Software in ACI Mode 12.0(1p), Cisco NX-OS System Software in ACI Mode 12.0(1q), Cisco NX-OS System Software in ACI Mode 12.0(2h), Cisco NX-OS System Software in ACI Mode 12.0(2l), Cisco NX-OS System Software in ACI Mode 12.0(2m), Cisco NX-OS System Software in ACI Mode 12.0(2n), Cisco NX-OS System Software in ACI Mode 12.0(2o), Cisco NX-OS System Software in ACI Mode 12.0(2f), Cisco NX-OS System Software in ACI Mode 12.0(1r), Cisco NX-OS System Software in ACI Mode 12.1(1h), Cisco NX-OS System Software in ACI Mode 12.1(2e), Cisco NX-OS System Software in ACI Mode 12.1(3g), Cisco NX-OS System Software in ACI Mode 12.1(4a), Cisco NX-OS System Software in ACI Mode 12.1(1i), Cisco NX-OS System Software in ACI Mode 12.1(2g), Cisco NX-OS System Software in ACI Mode 12.1(2k), Cisco NX-OS System Software in ACI Mode 12.1(3h), Cisco NX-OS System Software in ACI Mode 12.1(3j), Cisco NX-OS System Software in ACI Mode 12.2(1n), Cisco NX-OS System Software in ACI Mode 12.2(2e), Cisco NX-OS System Software in ACI Mode 12.2(3j), Cisco NX-OS System Software in ACI Mode 12.2(4f), Cisco NX-OS System Software in ACI Mode 12.2(4p), Cisco NX-OS System Software in ACI Mode 12.2(3p), Cisco NX-OS System Software in ACI Mode 12.2(3r), Cisco NX-OS System Software in ACI Mode 12.2(3s), Cisco NX-OS System Software in ACI Mode 12.2(3t), Cisco NX-OS System Software in ACI Mode 12.2(2f), Cisco NX-OS System Software in ACI Mode 12.2(2g), Cisco NX-OS System Software in ACI Mode 12.2(2i), Cisco NX-OS System Software in ACI Mode 12.2(2j), Cisco NX-OS System Software in ACI Mode 12.2(2k), Cisco NX-OS System Software in ACI Mode 12.2(2q), Cisco NX-OS System Software in ACI Mode 12.2(1o), Cisco NX-OS System Software in ACI Mode 12.2(4q), Cisco NX-OS System Software in ACI Mode 12.2(4r), Cisco NX-OS System Software in ACI Mode 12.3(1e), Cisco NX-OS System Software in ACI Mode 12.3(1f), Cisco NX-OS System Software in ACI Mode 12.3(1i), Cisco NX-OS System Software in ACI Mode 12.3(1l), Cisco NX-OS System Software in ACI Mode 12.3(1o), Cisco NX-OS System Software in ACI Mode 12.3(1p), Cisco NX-OS System Software in ACI Mode 13.0(1k), Cisco NX-OS System Software in ACI Mode 13.0(2h), Cisco NX-OS System Software in ACI Mode 13.0(2k), Cisco NX-OS System Software in ACI Mode 13.0(2n), Cisco NX-OS System Software in ACI Mode 13.1(1i), Cisco NX-OS System Software in ACI Mode 13.1(2m), Cisco NX-OS System Software in ACI Mode 13.1(2o), Cisco NX-OS System Software in ACI Mode 13.1(2p), Cisco NX-OS System Software in ACI Mode 13.1(2q), Cisco NX-OS System Software in ACI Mode 13.1(2s), Cisco NX-OS System Software in ACI Mode 13.1(2t), Cisco NX-OS System Software in ACI Mode 13.2(1l), Cisco NX-OS System Software in ACI Mode 13.2(1m), Cisco NX-OS System Software in ACI Mode 13.2(2l), Cisco NX-OS System Software in ACI Mode 13.2(2o), Cisco NX-OS System Software in ACI Mode 13.2(3i), Cisco NX-OS System Software in ACI Mode 13.2(3n), Cisco NX-OS System Software in ACI Mode 13.2(3o), Cisco NX-OS System Software in ACI Mode 13.2(3r), Cisco NX-OS System Software in ACI Mode 13.2(4d), Cisco NX-OS System Software in ACI Mode 13.2(4e), Cisco NX-OS System Software in ACI Mode 11.3(1g), Cisco NX-OS System Software in ACI Mode 11.3(2f), Cisco NX-OS System Software in ACI Mode 11.3(1h), Cisco NX-OS System Software in ACI Mode 11.3(1i), Cisco NX-OS System Software in ACI Mode 11.3(2h), Cisco NX-OS System Software in ACI Mode 11.3(2i), Cisco NX-OS System Software in ACI Mode 11.3(2k), Cisco NX-OS System Software in ACI Mode 11.3(1j), Cisco NX-OS System Software in ACI Mode 11.3(2j), Cisco NX-OS System Software in ACI Mode 14.0(1h), Cisco NX-OS System Software in ACI Mode 14.0(2c), Cisco NX-OS System Software in ACI Mode 14.0(3d), Cisco NX-OS System Software in ACI Mode

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