CVE-2022-20773— Cisco Umbrella Virtual Appliance Static SSH Host Key Vulnerability
Quick assessment
Affected
Cisco Cisco Umbrella Insights Virtual Appliance
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Cisco Umbrella是美国思科（Cisco）公司的一套云安全平台。该平台能够预防网络钓鱼、恶意软件和勒索软件等网络威胁。 Cisco Umbrella 虚拟设备（VA）存在安全漏洞，该漏洞源于存在静态 SSH 主机密钥。攻击者利用此漏洞可以通过对与 Umbrella VA 的 SSH 连接执行中间人攻击。成功利用此漏洞可让攻击者了解管理员凭据、更改配置或重新加载 VA。以下产品和版本受到影响：3.2 及之前版本和 3.3 版本。
Possible ATT&CK Techniques 1 AI
T1557.001 · Name Resolution Poisoning and SMB Relay
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I. Basic Information for CVE-2022-20773
Vulnerability Information
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Vulnerability Title
Cisco Umbrella Virtual Appliance Static SSH Host Key Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Umbrella 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Umbrella是美国思科（Cisco）公司的一套云安全平台。该平台能够预防网络钓鱼、恶意软件和勒索软件等网络威胁。 Cisco Umbrella 虚拟设备（VA）存在安全漏洞，该漏洞源于存在静态 SSH 主机密钥。攻击者利用此漏洞可以通过对与 Umbrella VA 的 SSH 连接执行中间人攻击。成功利用此漏洞可让攻击者了解管理员凭据、更改配置或重新加载 VA。以下产品和版本受到影响：3.2 及之前版本和 3.3 版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Umbrella Insights Virtual Appliance | n/a | - |
|
II. Public POCs for CVE-2022-20773
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2022-20773 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uva-static-key-6RQTRs4c vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2022-04-21 · 12 CVEs total
| CVE-2022-20732 | 7.8 HIGH | Cisco Virtualized Infrastructure Manager Privilege Escalation Vulnerability |
| CVE-2022-20783 | 7.5 HIGH | Cisco TelePresence Collaboration Endpoint and RoomOS Software H.323 Denial of Service Vuln |
| CVE-2022-20790 | 6.5 MEDIUM | Cisco Unified Communications Products Arbitrary File Read Vulnerability |
| CVE-2022-20778 | 6.1 MEDIUM | Cisco Webex Meetings Cross-Site Scripting Vulnerability |
| CVE-2022-20788 | 6.1 MEDIUM | Cisco Unified Communications Products Cross-Site Scripting Vulnerability |
| CVE-2022-20795 | 5.8 MEDIUM | Cisco Adaptive Security Appliance and Cisco Firepower Threat Defense Software AnyConnect S |
| CVE-2022-20787 | 5.7 MEDIUM | Cisco Unified Communications Products Cross-Site Request Forgery Vulnerability |
| CVE-2022-20786 | 5.4 MEDIUM | Cisco Unified Communications Manager IM & Presence Service SQL Injection Vulnerability |
| CVE-2022-20804 | 5.3 MEDIUM | Cisco Unified Communications Products Denial of Service Vulnerability |
| CVE-2022-20789 | 4.9 MEDIUM | Cisco Unified Communications Products Arbitrary File Write Vulnerability |
| CVE-2022-20805 | 4.1 MEDIUM | Cisco Umbrella Secure Web Gateway File Decryption Bypass Vulnerability |
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V. Comments for CVE-2022-20773
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