cnvd - cnvd-2019-21309

cnvd-2019-21309

Vulnerability from cnvd

Title: Cisco Nexus 9000 Series Fabric Switches访问控制错误漏洞

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。

Severity: 中

Patch Name: Cisco Nexus 9000 Series Fabric Switches访问控制错误漏洞的补丁

Patch 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。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-n9kaci-bypass

Reference: https://nvd.nist.gov/vuln/detail/CVE-2019-1890

Impacted products

Name
Cisco Nexus 9000 Series Fabric Switches

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-1890"
    }
  },
  "description": "Cisco Nexus 9000 Series Fabric Switches\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u6b3e9000\u7cfb\u5217\u5149\u7ea4\u4ea4\u6362\u673a\u3002\n\nCisco Nexus 9000 Series Fabric Switches\uff08\u5904\u4e8eACI\u6a21\u5f0f\uff09\u4e2d\u5efa\u7acbfabric infrastructure VLAN\u94fe\u63a5\u7684\u8fc7\u7a0b\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728\u4e34\u8fd1\u7684\u5b50\u8282\u70b9\u4e0a\u5411Cisco Nexus 9000 Series Switch\u53d1\u9001\u6076\u610f\u7684LLDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u5b89\u5168\u9650\u5236\u5e76\u5c06\u672a\u6388\u6743\u7684\u670d\u52a1\u5668\u8fde\u63a5\u5230\u57fa\u7840\u8bbe\u65bd\u7684VLAN\u3002",
  "discovererName": "unKnow",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-n9kaci-bypass",
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  "number": "CNVD-2019-21309",
  "openTime": "2019-07-05",
  "patchDescription": "Cisco Nexus 9000 Series Fabric Switches\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u6b3e9000\u7cfb\u5217\u5149\u7ea4\u4ea4\u6362\u673a\u3002\r\n\r\nCisco Nexus 9000 Series Fabric Switches\uff08\u5904\u4e8eACI\u6a21\u5f0f\uff09\u4e2d\u5efa\u7acbfabric infrastructure VLAN\u94fe\u63a5\u7684\u8fc7\u7a0b\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728\u4e34\u8fd1\u7684\u5b50\u8282\u70b9\u4e0a\u5411Cisco Nexus 9000 Series Switch\u53d1\u9001\u6076\u610f\u7684LLDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u5b89\u5168\u9650\u5236\u5e76\u5c06\u672a\u6388\u6743\u7684\u670d\u52a1\u5668\u8fde\u63a5\u5230\u57fa\u7840\u8bbe\u65bd\u7684VLAN\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Cisco Nexus 9000 Series Fabric Switches\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Nexus 9000 Series Fabric Switches"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-1890",
  "serverity": "\u4e2d",
  "submitTime": "2019-07-05",
  "title": "Cisco Nexus 9000 Series Fabric Switches\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2019-1890 (GCVE-0-2019-1890)

Vulnerability from cvelistv5

Published

2019-07-04 20:00

Modified

2024-11-21 19:20

Severity ?

7.4 (High) - CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

CWE

CWE-284

Summary

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.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-n9kaci-bypass	vendor-advisory, x_refsource_CISCO
	http://www.securityfocus.com/bid/109052	vdb-entry, x_refsource_BID

Impacted products

	Vendor	Product	Version
	Cisco	Cisco NX-OS System Software in ACI Mode 11.0.1b	Version: unspecified < 14.1(2g)

Show details on NVD website

JSON

To clipboard

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          },
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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