What is CVE-2019-1590?

CVE-2019-1590 is a high-severity vulnerability in Cisco Nx-Os Software For Nexus 9000 Series Fabric Switches Aci Mode, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2019-05-03.

How severe is CVE-2019-1590?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Cisco Nx-Os Software For Nexus 9000 Series Fabric Switches Aci Mode

CVE-2019-1590

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.

Vulnerability class: Improper Certificate Validation

EPSS: 0.010 (58.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2019-1590?: CVE-2019-1590 is a high-severity vulnerability in Cisco Nx-Os Software For Nexus 9000 Series Fabric Switches Aci Mode, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2019-05-03.
How severe is CVE-2019-1590?: High severity. CVSS v3 base score is 8.1 out of 10.