Vulnerability · Published Jun 29, 2021 · Assigned by cisco

CVE-2021-1134Cisco DNA Center Certificate Validation Vulnerability

High 7.4

In plain English

A high-severity improper certificate validation in Cisco Digital Network Architecture Center (DNA Center) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.0)7.4High

Exploit odds (30 days)0.8%top 44.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco Digital Network Architecture Center (DNA Center)	n/a

Weakness: CWE-295 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

20210616 Cisco DNA Center Certificate Validation Vulnerability vendor-advisory, x_refsource_CISCO