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CVE-2020-3272— Cisco Prime Network Registrar DHCP Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco Prime Network Registrar
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 Prime Network Registrar（CPNR）是美国思科（Cisco）公司的一款网络注册器产品。该产品提供了动态主机配置协议（DHCP）、域名系统（DNS）和IP地址管理（IPAM）等服务。 Cisco CPNR中存在输入验证错误漏洞，该漏洞源于程序没有对接收的DHCP流量进行充分的输入验证。远程攻击者可借助特制的DHCP请求利用该漏洞导致拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 1.51% · P73
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I. Basic Information for CVE-2020-3272

Vulnerability Information
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Vulnerability Title
Cisco Prime Network Registrar DHCP Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the DHCP server of Cisco Prime Network Registrar could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of incoming DHCP traffic. An attacker could exploit this vulnerability by sending a crafted DHCP request to an affected device. A successful exploit could allow the attacker to cause a restart of the DHCP server process, causing a DoS condition.
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 Prime Network Registrar 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Prime Network Registrar（CPNR）是美国思科（Cisco）公司的一款网络注册器产品。该产品提供了动态主机配置协议（DHCP）、域名系统（DNS）和IP地址管理（IPAM）等服务。 Cisco CPNR中存在输入验证错误漏洞，该漏洞源于程序没有对接收的DHCP流量进行充分的输入验证。远程攻击者可借助特制的DHCP请求利用该漏洞导致拒绝服务。
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 Prime Network Registrar n/a -

II. Public POCs for CVE-2020-3272

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III. Intelligence Information for CVE-2020-3272

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Vendor Advisories for CVE-2020-3272 (1)

Same Patch Batch · Cisco · 2020-05-22 · 6 CVEs total

CVE-2020-3280 Cisco Unified Contact Center Express Remote Code Execution Vulnerability
CVE-2020-3184 Cisco Prime Collaboration Provisioning Software SQL Injection Vulnerability
CVE-2020-3314 Cisco AMP for Endpoints Mac Connector Software File Scan Denial of Service Vulnerability
CVE-2020-3343 Cisco AMP for Endpoints Linux Connector and AMP for Endpoints Mac Connector Software Memor
CVE-2020-3344 Cisco AMP for Endpoints Linux Connector and AMP for Endpoints Mac Connector Software Memor

IV. Related Vulnerabilities

Same product: Cisco Prime Network Registrar
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2020-3272

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