CVE-2022-20773

A vulnerability in the key-based SSH authentication mechanism of Cisco Umbrella Virtual Appliance (VA) could allow an unauthenticated, remote attacker to impersonate a VA. This vulnerability is due to the presence of a static SSH host key. An attacker could exploit this vulnerability by performing a man-in-the-middle attack on an SSH connection to the Umbrella VA. A successful exploit could allow the attacker to learn the administrator credentials, change configurations, or reload the VA. Note: SSH is not enabled by default on the Umbrella VA.

Score

CVSS 3.1 7.5 High

Status

Analyzed - psirt@cisco.com

Published

2022-04-21

Last modified

2024-11-06

Weaknesses

CWE-321, CWE-798

Affected products

• Cisco Umbrella Insights Virtual Appliance (Cisco)
• Umbrella Virtual Appliance (Cisco)

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uva-static-key-6RQTRs4c