CVE-2020-3272— Cisco Prime Network Registrar DHCP Denial of Service Vulnerability
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cpnr-dhcp-dos-BkEZfhLPvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2020-3272
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
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-20
V. Comments for CVE-2020-3272
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