CVE-2020-3172— Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability
Quick assessment
Affected
Cisco Cisco Unified Computing System (Managed)
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 NX-OS Software和Cisco FXOS Software都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco FXOS Software是一套运行在思科安全设备中的防火墙软件。 Cisco NX-OS Software和Cisco FXOS Software中的Cisco Discovery Protocol存在输入验证错误漏洞，该漏洞源于程序没有充分地验证Cisco Discovery Protocol
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-3172
Vulnerability Information
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Vulnerability Title
Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code as root or cause a denial of service (DoS) condition on an affected device. The vulnerability exists because of insufficiently validated Cisco Discovery Protocol packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to a Layer 2-adjacent affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code as root or cause a DoS condition on the affected device. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Note: This vulnerability is different from the following Cisco FXOS and NX-OS Software Cisco Discovery Protocol vulnerabilities that Cisco announced on Feb. 5, 2020: Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability and Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco NX-OS Software和Cisco FXOS Software 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco NX-OS Software和Cisco FXOS Software都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco FXOS Software是一套运行在思科安全设备中的防火墙软件。 Cisco NX-OS Software和Cisco FXOS Software中的Cisco Discovery Protocol存在输入验证错误漏洞，该漏洞源于程序没有充分地验证Cisco Discovery Protocol
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 Unified Computing System (Managed) | unspecified ~ n/a | - |
|
II. Public POCs for CVE-2020-3172
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-3172 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-fxos-nxos-cdp vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2020-02-26 · 11 CVEs total
| CVE-2020-3165 | Cisco NX-OS Software Border Gateway Protocol MD5 Authentication Bypass Vulnerability | |
| CVE-2020-3175 | Cisco MDS 9000 Series Multilayer Switches Denial of Service Vulnerability | |
| CVE-2020-3174 | Cisco NX-OS Software Anycast Gateway Invalid ARP Vulnerability | |
| CVE-2020-3173 | Cisco UCS Manager Software Local Management CLI Command Injection Vulnerability | |
| CVE-2020-3171 | Cisco FXOS and UCS Manager Software Local Management CLI Command Injection Vulnerability | |
| CVE-2020-3170 | Cisco NX-OS Software NX-API Denial of Service Vulnerability | |
| CVE-2020-3169 | Cisco FXOS Software CLI Command Injection Vulnerability | |
| CVE-2020-3168 | Cisco Nexus 1000V Switch for VMware vSphere Secure Login Enhancements Denial of Service Vu | |
| CVE-2020-3167 | Cisco FXOS and UCS Manager Software CLI Command Injection Vulnerability | |
| CVE-2020-3166 | Cisco FXOS Software CLI Arbitrary File Read and Write Vulnerability |
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V. Comments for CVE-2020-3172
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