Vulnerability-Lookup

CNVD-2020-50560

Vulnerability from cnvd - Published: 2020-09-07

Title

Cisco FXOS和NX-OS拒绝服务漏洞（CNVD-2020-50560）

Description

Cisco NX-OS Software和Cisco FXOS Software都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco FXOS Software是一套运行在思科安全设备中的防火墙软件。 Cisco FXOS Software和Cisco NX-OS Software中的Fabric服务组件存在安全漏洞，该漏洞源于受影响的软件分析Cisco结构服务消息时错误处理不足，攻击者可以利用该漏洞导致拒绝服务攻击。

Severity

高

Patch Name

Cisco FXOS和NX-OS拒绝服务漏洞（CNVD-2020-50560）的补丁

Patch Description

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-fxos-nxos-cfs-dos-dAmnymbd

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-3517

Impacted products

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

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3517",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3517"
    }
  },
  "description": "Cisco NX-OS Software\u548cCisco FXOS Software\u90fd\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4ea7\u54c1\u3002Cisco NX-OS Software\u662f\u4e00\u5957\u4ea4\u6362\u673a\u4f7f\u7528\u7684\u6570\u636e\u4e2d\u5fc3\u7ea7\u64cd\u4f5c\u7cfb\u7edf\u8f6f\u4ef6\u3002Cisco FXOS Software\u662f\u4e00\u5957\u8fd0\u884c\u5728\u601d\u79d1\u5b89\u5168\u8bbe\u5907\u4e2d\u7684\u9632\u706b\u5899\u8f6f\u4ef6\u3002\n\nCisco FXOS Software\u548cCisco NX-OS Software\u4e2d\u7684Fabric\u670d\u52a1\u7ec4\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8f6f\u4ef6\u5206\u6790Cisco\u7ed3\u6784\u670d\u52a1\u6d88\u606f\u65f6\u9519\u8bef\u5904\u7406\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\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-fxos-nxos-cfs-dos-dAmnymbd",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-50560",
  "openTime": "2020-09-07",
  "patchDescription": "Cisco NX-OS Software\u548cCisco FXOS Software\u90fd\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4ea7\u54c1\u3002Cisco NX-OS Software\u662f\u4e00\u5957\u4ea4\u6362\u673a\u4f7f\u7528\u7684\u6570\u636e\u4e2d\u5fc3\u7ea7\u64cd\u4f5c\u7cfb\u7edf\u8f6f\u4ef6\u3002Cisco FXOS Software\u662f\u4e00\u5957\u8fd0\u884c\u5728\u601d\u79d1\u5b89\u5168\u8bbe\u5907\u4e2d\u7684\u9632\u706b\u5899\u8f6f\u4ef6\u3002\r\n\r\nCisco FXOS Software\u548cCisco NX-OS Software\u4e2d\u7684Fabric\u670d\u52a1\u7ec4\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8f6f\u4ef6\u5206\u6790Cisco\u7ed3\u6784\u670d\u52a1\u6d88\u606f\u65f6\u9519\u8bef\u5904\u7406\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u653b\u51fb\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 FXOS\u548cNX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-50560\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco NX-OS Software",
      "Cisco FXOS Software"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-3517",
  "serverity": "\u9ad8",
  "submitTime": "2020-08-27",
  "title": "Cisco FXOS\u548cNX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-50560\uff09"
}

CVE-2020-3517 (GCVE-0-2020-3517)

Vulnerability from cvelistv5 – Published: 2020-08-27 15:40 – Updated: 2024-11-13 18:09

Title

Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

Summary

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attack vector is configuration dependent and could be remote or adjacent. For more information about the attack vector, see the Details section of this advisory. The vulnerability is due to insufficient error handling when the affected software parses Cisco Fabric Services messages. An attacker could exploit this vulnerability by sending malicious Cisco Fabric Services messages to an affected device. A successful exploit could allow the attacker to cause a reload of an affected device, which could result in a DoS condition.

Severity

8.6 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-13 17:13 UTC

CWE

CWE-476

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco NX-OS Software	Affected: n/a

Date Public

2020-08-26 00:00

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.