cnvd - cnvd-2021-14794

CNVD-2021-14794

Vulnerability from cnvd - Published: 2021-03-07

Title

Nexus Series Fabri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。 Nexus 9000 Series Fabri存在安全漏洞，攻击者可利用该漏洞禁用SFP接口上的切换，这可能会中断网络。

Severity

低

Patch Name

Nexus Series Fabri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。 Nexus 9000 Series Fabri存在安全漏洞，攻击者可利用该漏洞禁用SFP接口上的切换，这可能会中断网络。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

厂商已发布了漏洞修复程序，请及时关注更新： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apic-lldap-dos-WerV9CFj

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-1231

Impacted products

Name
Cisco Nexus 9000

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1231",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1231"
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-14794",
  "openTime": "2021-03-07",
  "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\nNexus 9000 Series Fabri\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7981\u7528SFP\u63a5\u53e3\u4e0a\u7684\u5207\u6362\uff0c\u8fd9\u53ef\u80fd\u4f1a\u4e2d\u65ad\u7f51\u7edc\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": "Nexus Series Fabri\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Nexus 9000"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1231",
  "serverity": "\u4f4e",
  "submitTime": "2021-02-25",
  "title": "Nexus Series Fabri\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-1231 (GCVE-0-2021-1231)

Vulnerability from cvelistv5 – Published: 2021-02-24 19:30 – Updated: 2024-11-08 23:38

Summary

A vulnerability in the Link Layer Discovery Protocol (LLDP) for Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, adjacent attacker to disable switching on a small form-factor pluggable (SFP) interface. This vulnerability is due to incomplete validation of the source of a received LLDP packet. An attacker could exploit this vulnerability by sending a crafted LLDP packet on an SFP interface to an affected device. A successful exploit could allow the attacker to disable switching on the SFP interface, which could disrupt network traffic.

Severity ?

4.7 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

CWE

CWE-284

Assigner

cisco

References

URL

Tags

https://tools.cisco.com/security/center/content/C…

vendor-advisoryx_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco NX-OS System Software in ACI Mode	Affected: n/a

Show details on NVD website

JSON

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        "metrics": [
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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2021-14794

CVE-2021-1231 (GCVE-0-2021-1231)

Tags

Sightings

Nomenclature