CVE-2022-20738— Cisco Umbrella Secure Web Gateway File Inspection Bypass 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 Secure Web Gateway存在安全漏洞，该漏洞源于文件检查特性中的限制不足造成的。攻击者可利用该漏洞绕过文件检查功能。
Possible ATT&CK Techniques 1 AI
T1564.004 · NTFS File Attributes
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I. Basic Information for CVE-2022-20738
Vulnerability Information
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Vulnerability Title
Cisco Umbrella Secure Web Gateway File Inspection Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Cisco Umbrella Secure Web Gateway service could allow an unauthenticated, remote attacker to bypass the file inspection feature. This vulnerability is due to insufficient restrictions in the file inspection feature. An attacker could exploit this vulnerability by downloading a crafted payload through specific methods. A successful exploit could allow the attacker to bypass file inspection protections and download a malicious payload.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Umbrella 安全漏洞
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 Secure Web Gateway存在安全漏洞，该漏洞源于文件检查特性中的限制不足造成的。攻击者可利用该漏洞绕过文件检查功能。
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-2022-20738
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2022-20738 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-swg-fbyps-3z4qT7p vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2022-02-10 · 18 CVEs total
| CVE-2022-20705 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20749 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20712 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20711 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20710 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20709 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20708 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20707 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20706 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20704 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20703 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20702 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20701 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20700 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20699 | 10.0 CRITICAL | Cisco Small Business RV Series Routers Vulnerabilities |
| CVE-2022-20630 | 4.4 MEDIUM | Cisco DNA Center Information Disclosure Vulnerability |
| CVE-2022-20680 | 4.3 MEDIUM | Cisco Prime Service Catalog Information Disclosure Vulnerability |
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V. Comments for CVE-2022-20738
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