CVE-2020-3367— Cisco Secure Web Appliance Privilege Escalation Vulnerability
Quick assessment
Affected
Cisco Cisco Web Security Appliance (WSA)
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 AsyncOS是美国思科（Cisco）公司的一款应用于思科设备的操作系统。 Cisco AsyncOS for the Cisco Secure Web Appliance 存在操作系统命令注入漏洞，该漏洞源于对用户提供的web界面和CLI输入的验证不足造成的。攻击者可利用该漏洞执行命令注入并将特权提升到root。一个成功的攻击可以允许攻击者在u盘上执行任意命令。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-3367
Vulnerability Information
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Vulnerability Title
Cisco Secure Web Appliance Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the log subscription subsystem of Cisco AsyncOS for the Cisco Secure Web Appliance (formerly Web Security Appliance) could allow an authenticated, local attacker to perform command injection and elevate privileges to root. This vulnerability is due to insufficient validation of user-supplied input for the web interface and CLI. An attacker could exploit this vulnerability by authenticating to the affected device and injecting scripting commands in the scope of the log subscription subsystem. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco AsyncOS 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco AsyncOS是美国思科（Cisco）公司的一款应用于思科设备的操作系统。 Cisco AsyncOS for the Cisco Secure Web Appliance 存在操作系统命令注入漏洞，该漏洞源于对用户提供的web界面和CLI输入的验证不足造成的。攻击者可利用该漏洞执行命令注入并将特权提升到root。一个成功的攻击可以允许攻击者在u盘上执行任意命令。
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 Web Security Appliance (WSA) | n/a | - |
|
II. Public POCs for CVE-2020-3367
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2020-3367 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-prv-esc-nPzWZrQj vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2020-11-18 · 19 CVEs total
| CVE-2020-3470 | 9.8 CRITICAL | Cisco Integrated Management Controller Multiple Remote Code Execution Vulnerabilities |
| CVE-2020-3586 | 9.4 CRITICAL | Cisco DNA Spaces Connector Command Injection Vulnerability |
| CVE-2020-3471 | 6.5 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Unauthorized Audio Information Exposu |
| CVE-2020-3419 | 6.5 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Ghost Join Vulnerability |
| CVE-2020-27126 | 6.1 MEDIUM | Cisco Webex Meetings API Cross-Site Scripting Vulnerability |
| CVE-2020-26068 | 5.5 MEDIUM | Cisco Telepresence CE Software and RoomOS Software Unauthorized Token Generation Vulnerabi |
| CVE-2020-3441 | 5.3 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Information Disclosure Vulnerability |
| CVE-2020-26078 | Cisco IoT Field Network Director File Overwrite Vulnerability | |
| CVE-2020-26079 | Cisco IoT Field Network Director Unprotected Storage of Credentials Vulnerability | |
| CVE-2020-26080 | Cisco IoT Field Network Director Improper Domain Access Control Vulnerability | |
| CVE-2020-26081 | Cisco IoT Field Network Director Cross-Site Scripting Vulnerabilities | |
| CVE-2020-3392 | Cisco IoT Field Network Director Missing API Authentication Vulnerability | |
| CVE-2020-26077 | Cisco IoT Field Network Director Improper Access Control Vulnerability | |
| CVE-2020-26076 | Cisco IoT Field Network Director Information Disclosure Vulnerability | |
| CVE-2020-26075 | Cisco IoT Field Network REST API Insufficient Input Validation Vulnerability | |
| CVE-2020-3482 | Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability | |
| CVE-2020-3531 | Cisco IoT Field Network Director Unauthenticated REST API Vulnerability | |
| CVE-2020-26072 | Cisco IoT Field Network Director SOAP API Authorization Bypass Vulnerability |
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V. Comments for CVE-2020-3367
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