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CVE-2022-20625— Cisco FXOS and NX-OS Software Cisco Discovery Protocol Service Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco NX-OS Software
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 FXOS Software 和 Cisco NX-OS Software 的 Cisco Discovery Protocol 存在输入验证错误漏洞，该漏洞源于思科FXOS软件和思科NX-OS软件的思科发现协议服务存在

CVSS 4.3 · Medium EPSS 3.26% · P88
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I. Basic Information for CVE-2022-20625

Vulnerability Information
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Vulnerability Title
Cisco FXOS and NX-OS Software Cisco Discovery Protocol Service Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Cisco Discovery Protocol service of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the service to restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of Cisco Discovery Protocol messages that are processed by the Cisco Discovery Protocol service. An attacker could exploit this vulnerability by sending a series of malicious Cisco Discovery Protocol messages to an affected device. A successful exploit could allow the attacker to cause the Cisco Discovery Protocol service to fail and restart. In rare conditions, repeated failures of the process could occur, which could cause the entire device to restart.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
资源管理错误
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 FXOS Software 和 Cisco NX-OS Software 的 Cisco Discovery Protocol 存在输入验证错误漏洞，该漏洞源于思科FXOS软件和思科NX-OS软件的思科发现协议服务存在
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 NX-OS Software n/a -

II. Public POCs for CVE-2022-20625

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III. Intelligence Information for CVE-2022-20625

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Vendor Advisories for CVE-2022-20625 (1)

Same Patch Batch · Cisco · 2022-02-23 · 4 CVEs total

CVE-2022-20650 8.8 HIGH Cisco NX-OS Software NX-API Command Injection Vulnerability
CVE-2022-20623 8.6 HIGH Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vuln
CVE-2022-20624 8.6 HIGH Cisco NX-OS Software Cisco Fabric Services Over IP Denial of Service Vulnerability

IV. Related Vulnerabilities

Same product: Cisco NX-OS Software
Same vendor: Cisco
Same weakness: CWE-399

V. Comments for CVE-2022-20625

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