SB2022042110 - Usage of static SSH host key in Cisco Umbrella Virtual Appliance
Published: April 21, 2022
Security Bulletin ID
SB2022042110
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of Hard-coded Cryptographic Key (CVE-ID: CVE-2022-20773)
CWE-ID: CWE-321 - Use of Hard-coded Cryptographic Key
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to impersonate the virtual appliance.
The vulnerability exists due to the presence of a static SSH host key. A remote attacker can perform a man-in-the-middle (MitM) attack on an SSH connection to the Umbrella VA.
Remediation
Install update from vendor's website.