CVE-2019-1590

Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Insecure Fabric Authentication Vulnerability

Description

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.

Category

8.1
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.68% Top 30%
Vendor Advisory cisco.com
Affected: Cisco Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-aci-insecure-fabric vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-1590?
CVE-2019-1590 has been scored as a high severity vulnerability.
How to fix CVE-2019-1590?
To fix CVE-2019-1590, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-1590 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-1590 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1590?
CVE-2019-1590 affects Cisco Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode.
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