cnvd - cnvd-2018-23896

cnvd-2018-23896

Vulnerability from cnvd

Title: Cisco FXOS和NX-OS拒绝服务漏洞

Description:

Cisco FXOS是Firepower可扩展操作系统。Cisco NX-OS是适用于思科Nexus系列以太网交换机和MDS系列光纤通道存储区域网络交换机的网络操作系统。

Cisco FXOS和NX-OS的链路层发现协议（LLDP）的实现存在拒绝服务漏洞。该漏洞源于对LLDP帧头的某些类型、长度、值（TLV）字段的输入验证不当。未认证邻近攻击者可通过向目标设备的接口发送特制LLDP数据包利用该漏洞导致交换机意外重新加载。

Severity: 高

Patch Name: Cisco FXOS和NX-OS拒绝服务漏洞的补丁

Patch Description:

Cisco FXOS是Firepower可扩展操作系统。Cisco NX-OS是适用于思科Nexus系列以太网交换机和MDS系列光纤通道存储区域网络交换机的网络操作系统。

Cisco FXOS和NX-OS的链路层发现协议（LLDP）的实现存在拒绝服务漏洞。该漏洞源于对LLDP帧头的某些类型、长度、值（TLV）字段的输入验证不当。未认证邻近攻击者可通过向目标设备的接口发送特制LLDP数据包利用该漏洞导致交换机意外重新加载。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

厂商已发布漏洞修复程序，请及时关注更新： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos

Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos

Impacted products

Name
['Cisco NX-OS', 'Cisco FXOS 0']

Show details on source website

JSON

To clipboard

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    "bid": {
      "bidNumber": "105674"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-0395"
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  "description": "Cisco FXOS\u662fFirepower\u53ef\u6269\u5c55\u64cd\u4f5c\u7cfb\u7edf\u3002Cisco NX-OS\u662f\u9002\u7528\u4e8e\u601d\u79d1Nexus\u7cfb\u5217\u4ee5\u592a\u7f51\u4ea4\u6362\u673a\u548cMDS\u7cfb\u5217\u5149\u7ea4\u901a\u9053\u5b58\u50a8\u533a\u57df\u7f51\u7edc\u4ea4\u6362\u673a\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco FXOS\u548cNX-OS\u7684\u94fe\u8def\u5c42\u53d1\u73b0\u534f\u8bae\uff08LLDP\uff09\u7684\u5b9e\u73b0\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9LLDP\u5e27\u5934\u7684\u67d0\u4e9b\u7c7b\u578b\u3001\u957f\u5ea6\u3001\u503c\uff08TLV\uff09\u5b57\u6bb5\u7684\u8f93\u5165\u9a8c\u8bc1\u4e0d\u5f53\u3002\u672a\u8ba4\u8bc1\u90bb\u8fd1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u76ee\u6807\u8bbe\u5907\u7684\u63a5\u53e3\u53d1\u9001\u7279\u5236LLDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u4ea4\u6362\u673a\u610f\u5916\u91cd\u65b0\u52a0\u8f7d\u3002",
  "discovererName": "Cisco",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos",
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  "number": "CNVD-2018-23896",
  "openTime": "2018-11-23",
  "patchDescription": "Cisco FXOS\u662fFirepower\u53ef\u6269\u5c55\u64cd\u4f5c\u7cfb\u7edf\u3002Cisco NX-OS\u662f\u9002\u7528\u4e8e\u601d\u79d1Nexus\u7cfb\u5217\u4ee5\u592a\u7f51\u4ea4\u6362\u673a\u548cMDS\u7cfb\u5217\u5149\u7ea4\u901a\u9053\u5b58\u50a8\u533a\u57df\u7f51\u7edc\u4ea4\u6362\u673a\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco FXOS\u548cNX-OS\u7684\u94fe\u8def\u5c42\u53d1\u73b0\u534f\u8bae\uff08LLDP\uff09\u7684\u5b9e\u73b0\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9LLDP\u5e27\u5934\u7684\u67d0\u4e9b\u7c7b\u578b\u3001\u957f\u5ea6\u3001\u503c\uff08TLV\uff09\u5b57\u6bb5\u7684\u8f93\u5165\u9a8c\u8bc1\u4e0d\u5f53\u3002\u672a\u8ba4\u8bc1\u90bb\u8fd1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u76ee\u6807\u8bbe\u5907\u7684\u63a5\u53e3\u53d1\u9001\u7279\u5236LLDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u4ea4\u6362\u673a\u610f\u5916\u91cd\u65b0\u52a0\u8f7d\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",
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  "products": {
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  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos",
  "serverity": "\u9ad8",
  "submitTime": "2018-10-18",
  "title": "Cisco FXOS\u548cNX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2018-0395 (GCVE-0-2018-0395)

Vulnerability from cvelistv5

Published

2018-10-17 20:00

Modified

2024-11-26 14:25

Severity ?

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

CWE

CWE-20

Summary

A vulnerability in the Link Layer Discovery Protocol (LLDP) implementation for Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition when the device unexpectedly reloads. The vulnerability is due to improper input validation of certain type, length, value (TLV) fields of the LLDP frame header. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface on the targeted device. A successful exploit could allow the attacker to cause the switch to reload unexpectedly.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos	vendor-advisory, x_refsource_CISCO
	http://www.securitytracker.com/id/1041919	vdb-entry, x_refsource_SECTRACK
	http://www.securityfocus.com/bid/105674	vdb-entry, x_refsource_BID

Impacted products

Vendor

Product

Version

▼

Cisco

Cisco NX-OS Software

Version: unspecified < 6.2(1)

Cisco

Firepower 4100 Series Next-Generation Firewalls

Version: unspecified < <2.3.1.58

Show details on NVD website

JSON

To clipboard

{
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          },
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        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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                "id": "CVE-2018-0395",
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                  },
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                  },
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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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