CVE-2019-1840— Cisco Prime Network Registrar 安全漏洞
一分钟漏洞结论
影响对象
Cisco Cisco Prime Network Registrar
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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中的DHCPv6输入数据包处理器存在安全漏洞，该漏洞源于程序没有充分地验证用户提交的输入。远程攻击者可通过发送畸形的DHCPv6数据包利用该漏洞重启服务器，导致拒绝服务。
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一、 漏洞 CVE-2019-1840 基础信息
漏洞信息
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Vulnerability Title
Cisco Prime Network Registrar Denial of Service Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the DHCPv6 input packet processor of Cisco Prime Network Registrar could allow an unauthenticated, remote attacker to restart the server and cause a denial of service (DoS) condition on the affected system. The vulnerability is due to incomplete user-supplied input validation when a custom extension attempts to change a DHCPv6 packet received by the application. An attacker could exploit this vulnerability by sending malformed DHCPv6 packets to the application. An exploit could allow the attacker to trigger a restart of the service which, if exploited repeatedly, might lead to a DoS condition. This vulnerability can only be exploited if the administrator of the server has previously installed custom extensions that attempt to modify the packet details before the packet has been processed. Note: Although the CVSS score matches a High SIR, this has been lowered to Medium because this condition will only affect an application that has customer-developed extensions that will attempt to modify packet parameters before the packet has been completely sanitized. If packet modification in a custom extension happens after the packet has been sanitized, the application will not be affected by this vulnerability. Software versions prior to 8.3(7) and 9.1(2) are affected.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
初始化不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
Cisco Prime Network Registrar 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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中的DHCPv6输入数据包处理器存在安全漏洞，该漏洞源于程序没有充分地验证用户提交的输入。远程攻击者可通过发送畸形的DHCPv6数据包利用该漏洞重启服务器，导致拒绝服务。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Cisco | Cisco Prime Network Registrar | unspecified ~ 8.3(7) | - |
|
二、漏洞 CVE-2019-1840 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2019-1840 厂商安全公告 (2)
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-pnr-dos vendor-advisory x_refsource_CISCO
同批安全公告 · Cisco · 2019-04-18 · 共 23 条
| CVE-2019-1800 | Cisco Wireless LAN Controller（WLC）Software 输入验证错误漏洞 | |
| CVE-2019-1719 | Cisco Identity Services Engine 跨站脚本漏洞 | |
| CVE-2019-1722 | Cisco Expressway Series和Cisco TelePresence Video Communication Server 跨站请求伪造漏洞 | |
| CVE-2019-1721 | Cisco Expressway Series和Cisco TelePresence Video Communication Server 输入验证错误漏洞 | |
| CVE-2019-1720 | Cisco Expressway Series和Cisco TelePresence Video Communication Server 输入验证错误漏洞 | |
| CVE-2019-1777 | Cisco Registered Envelope Service 跨站脚本漏洞 | |
| CVE-2019-1725 | Cisco UCS B-Series Blade Servers 操作系统命令注入漏洞 | |
| CVE-2019-1792 | Cisco Umbrella 跨站脚本漏洞 | |
| CVE-2019-1794 | Cisco Directory Connector 代码问题漏洞 | |
| CVE-2019-1799 | Cisco Wireless LAN Controller（WLC）Software 输入验证错误漏洞 | |
| CVE-2019-1796 | Cisco Wireless LAN Controller（WLC）Software 输入验证错误漏洞 | |
| CVE-2019-1841 | Cisco Digital Network Architecture Center 输入验证错误漏洞 | |
| CVE-2019-1797 | Cisco Wireless LAN Controller（WLC）Software 跨站请求伪造漏洞 | |
| CVE-2019-1805 | Cisco Wireless LAN Controller（WLC）Software 输入验证错误漏洞 | |
| CVE-2019-1802 | Cisco Firepower Management Center 跨站脚本漏洞 | |
| CVE-2019-1830 | Cisco Wireless LAN Controller 输入验证错误漏洞 | |
| CVE-2019-1829 | 多款Cisco产品操作系统命令注入漏洞 | |
| CVE-2019-1826 | 多款Cisco产品输入验证错误漏洞 | |
| CVE-2019-1835 | 多款Cisco产品路径遍历漏洞 | |
| CVE-2019-1834 | 多款Cisco产品输入验证错误漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2019-1840
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