SB2021061706 - Improper Certificate Validation in Cisco DNA Center
Published: June 17, 2021
Security Bulletin ID
SB2021061706
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Certificate Validation (CVE-ID: CVE-2021-1134)
CWE-ID: CWE-295 - Improper Certificate Validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to gain unauthorized access to sensitive data.
The vulnerability exists due to an incomplete validation of the X.509 certificate used when establishing a connection between DNA Center and Cisco Identity Services Engine (ISE) server. A remote attacker can use a specially crafted certificate and view sensitive information on the target system.
Remediation
Install update from vendor's website.