Vulnerability-Lookup

CNVD-2018-23896

Vulnerability from cnvd - Published: 2018-11-23

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

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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  "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",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "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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  "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 – Updated: 2024-11-26 14:25

Title

Cisco FXOS and NX-OS Software Link Layer Discovery Protocol Denial of Service Vulnerability

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.

Severity

8.8 (High)


                        
                          CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-25 18:50 UTC

CWE

CWE-20

Assigner

cisco mitre root

References

3 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
http://www.securitytracker.com/id/1041919	vdb-entryx_refsource_SECTRACK
http://www.securityfocus.com/bid/105674	vdb-entryx_refsource_BID

Impacted products

2 products

Vendor	Product	Version
Cisco	Cisco NX-OS Software	Affected: unspecified , < 6.2(1) (custom)
Cisco	Firepower 4100 Series Next-Generation Firewalls	Affected: unspecified , < <2.3.1.58 (custom)

Date Public

2018-10-17 00:00

Show details on NVD website

JSON

To clipboard

{
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          },
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          }
        ],
        "title": "CVE Program Container"
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      {
        "metrics": [
          {
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                "id": "CVE-2018-0395",
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                    "Exploitation": "none"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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CNVD-2018-23896

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

Tags

Sightings

Nomenclature

Related by attack behaviour