Vulnerability-Lookup

CNVD-2021-43455

Vulnerability from cnvd - Published: 2021-06-20

Title

Cisco Catalyst 9200系列交换机拒绝服务漏洞

Description

Cisco Catalyst 9200是Cisco推出的入门级可堆叠企业网络交换机系列。 Cisco Catalyst 9200系列交换机的Polaris内核存在拒绝服务漏洞，攻击者可通过将巨型帧或大于配置的MTU大小的帧发送到设备的管理界面利用该漏洞导致设备完全崩溃。

Severity

高

Patch Name

Cisco Catalyst 9200系列交换机拒绝服务漏洞的补丁

Patch Description

Cisco Catalyst 9200是Cisco推出的入门级可堆叠企业网络交换机系列。 Cisco Catalyst 9200系列交换机的Polaris内核存在拒绝服务漏洞，攻击者可通过将巨型帧或大于配置的MTU大小的帧发送到设备的管理界面利用该漏洞导致设备完全崩溃。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-JP-DOS-g5FfGm8y

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-JP-DOS-g5FfGm8y

Impacted products

Name
Cisco Catalyst 9200系列交换机 null

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3527",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3527"
    }
  },
  "description": "Cisco Catalyst 9200\u662fCisco\u63a8\u51fa\u7684\u5165\u95e8\u7ea7\u53ef\u5806\u53e0\u4f01\u4e1a\u7f51\u7edc\u4ea4\u6362\u673a\u7cfb\u5217\u3002\n\nCisco Catalyst 9200\u7cfb\u5217\u4ea4\u6362\u673a\u7684Polaris\u5185\u6838\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u5de8\u578b\u5e27\u6216\u5927\u4e8e\u914d\u7f6e\u7684MTU\u5927\u5c0f\u7684\u5e27\u53d1\u9001\u5230\u8bbe\u5907\u7684\u7ba1\u7406\u754c\u9762\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u5b8c\u5168\u5d29\u6e83\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-JP-DOS-g5FfGm8y",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-43455",
  "openTime": "2021-06-20",
  "patchDescription": "Cisco Catalyst 9200\u662fCisco\u63a8\u51fa\u7684\u5165\u95e8\u7ea7\u53ef\u5806\u53e0\u4f01\u4e1a\u7f51\u7edc\u4ea4\u6362\u673a\u7cfb\u5217\u3002\r\n\r\nCisco Catalyst 9200\u7cfb\u5217\u4ea4\u6362\u673a\u7684Polaris\u5185\u6838\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u5de8\u578b\u5e27\u6216\u5927\u4e8e\u914d\u7f6e\u7684MTU\u5927\u5c0f\u7684\u5e27\u53d1\u9001\u5230\u8bbe\u5907\u7684\u7ba1\u7406\u754c\u9762\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u5b8c\u5168\u5d29\u6e83\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 Catalyst 9200\u7cfb\u5217\u4ea4\u6362\u673a\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Catalyst 9200\u7cfb\u5217\u4ea4\u6362\u673a null"
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-JP-DOS-g5FfGm8y",
  "serverity": "\u9ad8",
  "submitTime": "2020-09-25",
  "title": "Cisco Catalyst 9200\u7cfb\u5217\u4ea4\u6362\u673a\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2020-3527 (GCVE-0-2020-3527)

Vulnerability from cvelistv5 – Published: 2020-09-24 17:51 – Updated: 2024-11-13 18:01

Title

Cisco Catalyst 9200 Series Switches Jumbo Frame Denial of Service Vulnerability

Summary

A vulnerability in the Polaris kernel of Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to crash the device. The vulnerability is due to insufficient packet size validation. An attacker could exploit this vulnerability by sending jumbo frames or frames larger than the configured MTU size to the management interface of this device. A successful exploit could allow the attacker to crash the device fully before an automatic recovery.

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 17:12 UTC

CWE

CWE-20

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 IOS XE Software	Affected: n/a

Date Public

2020-09-24 00:00

Show details on NVD website

JSON

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          }
        ],
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
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          "versions": [
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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.

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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.

Action not permitted

CNVD-2021-43455

CVE-2020-3527 (GCVE-0-2020-3527)

Tags

Sightings

Nomenclature

Related by attack behaviour