Vulnerability · Published Apr 21, 2022 · Assigned by cisco

CVE-2022-20773Cisco Umbrella Virtual Appliance Static SSH Host Key Vulnerability

High 7.5

In plain English

A high-severity security flaw in Cisco Umbrella Insights Virtual Appliance from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.2%top 32.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco Umbrella Insights Virtual Appliance	n/a

Weakness: CWE-321 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

20220420 Cisco Umbrella Virtual Appliance Static SSH Host Key Vulnerability vendor-advisory, x_refsource_CISCO