CVE-2019-1890— Cisco Nexus 9000 Series Fabric Switches 访问控制错误漏洞
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一、 漏洞 CVE-2019-1890 基础信息
漏洞信息
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Vulnerability Title
Cisco Nexus 9000 Series Fabric Switches ACI Mode Fabric Infrastructure VLAN Unauthorized Access Vulnerability
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
A vulnerability in the fabric infrastructure VLAN connection establishment of the Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an unauthenticated, adjacent attacker to bypass security validations and connect an unauthorized server to the infrastructure VLAN. The vulnerability is due to insufficient security requirements during the Link Layer Discovery Protocol (LLDP) setup phase of the infrastructure VLAN. An attacker could exploit this vulnerability by sending a malicious LLDP packet on the adjacent subnet to the Cisco Nexus 9000 Series Switch in ACI mode. A successful exploit could allow the attacker to connect an unauthorized server to the infrastructure VLAN, which is highly privileged. With a connection to the infrastructure VLAN, the attacker can make unauthorized connections to Cisco Application Policy Infrastructure Controller (APIC) services or join other host endpoints.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
访问控制不恰当
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
Cisco Nexus 9000 Series Fabric Switches 访问控制错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Cisco Nexus 9000 Series Fabric Switches是美国思科（Cisco）公司的一款9000系列光纤交换机。 Cisco Nexus 9000 Series Fabric Switches（处于ACI模式）中建立fabric infrastructure VLAN链接的过程存在访问控制错误漏洞。攻击者可通过在临近的子节点上向Cisco Nexus 9000 Series Switch发送恶意的LLDP数据包利用该漏洞绕过安全限制并将未授权的服务器连接到基础设施的VLAN。
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 NX-OS System Software in ACI Mode 11.0.1b | unspecified ~ 14.1(2g) | - |
二、漏洞 CVE-2019-1890 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2019-1890 厂商安全公告 (2)
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-n9kaci-bypassvendor-advisoryx_refsource_CISCO
同批安全公告 · Cisco · 2019-07-04 · 共 5 条
| CVE-2019-1889 | Cisco Application Policy Infrastructure Controller 输入验证错误漏洞 | |
| CVE-2019-1855 | Cisco Jabber for Windows 权限许可和访问控制问题漏洞 | |
| CVE-2019-1884 | Cisco Web Security Appliance AsyncOS Software 输入验证错误漏洞 | |
| CVE-2019-1886 | Cisco Web Security Appliance AsyncOS Software 输入验证错误漏洞 |
IV. Related Vulnerabilities
Same vendor: Cisco
V. Comments for CVE-2019-1890
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