CVE-2021-1134

Cisco DNA Center Certificate Validation Vulnerability

Published Jun 29, 2021 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Description
A vulnerability in the Cisco Identity Services Engine (ISE) integration feature of the Cisco DNA Center Software could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data. The vulnerability is due to an incomplete validation of the X.509 certificate used when establishing a connection between DNA Center and an ISE server. An attacker could exploit this vulnerability by supplying a crafted certificate and could then intercept communications between the ISE and DNA Center. A successful exploit could allow the attacker to view and alter sensitive information that the ISE maintains about clients that are connected to the network.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2021-6601 A vulnerability in the Cisco Identity Services Engine (ISE) integration feature of the Cisco DNA Center Software could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data. The vulnerability is due to an incomplete validation of the X.509 certificate used when establishing a connection between DNA Center and an ISE server. An attacker could exploit this vulnerability by supplying a crafted certificate and could then intercept communications between the ISE and DNA Center. A successful exploit could allow the attacker to view and alter sensitive information that the ISE maintains about clients that are connected to the network.
History
Type Values Removed Values Added
First Time appeared Cisco catalyst Center
CPEs cpe:2.3:a:cisco:dna_center:*:*:*:*:*:*:*:* cpe:2.3:a:cisco:catalyst_center:*:*:*:*:*:*:*:*
Vendors & Products Cisco dna Center
Cisco catalyst Center
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cisco
Published
Updated
Nov 7, 2024, 10:07 PM
Reserved
Nov 13, 2020, 12:00 AM
Status
Modified
Published
Jun 29, 2021, 3:15 AM
Modified
Jun 17, 2026, 3:31 AM