cnvd - cnvd-2021-12829

CNVD-2021-12829

Vulnerability from cnvd - Published: 2021-02-26

Title

Cisco NX-OS拒绝服务漏洞（CNVD-2021-12829）

Description

Cisco NX-OS是适用于Cisco 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 NX-OS的协议独立多播(PIM)功能存在拒绝服务漏洞，攻击者可通过将特制PIM数据包发送到受影响的设备利用该漏洞导致流量环路，从而可导致拒绝服务。

Severity

中

Patch Name

Cisco NX-OS拒绝服务漏洞（CNVD-2021-12829）的补丁

Patch Description

Cisco NX-OS是适用于Cisco 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 NX-OS的协议独立多播(PIM)功能存在拒绝服务漏洞，攻击者可通过将特制PIM数据包发送到受影响的设备利用该漏洞导致流量环路，从而可导致拒绝服务。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-nxos-pim-dos-Y8SjMz4

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4

Impacted products

Name
Cisco NX-OS

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1367",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1367"
    }
  },
  "description": "Cisco NX-OS\u662f\u9002\u7528\u4e8eCisco Nexus\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 NX-OS\u7684\u534f\u8bae\u72ec\u7acb\u591a\u64ad(PIM)\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5236PIM\u6570\u636e\u5305\u53d1\u9001\u5230\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u6d41\u91cf\u73af\u8def\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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-nxos-pim-dos-Y8SjMz4",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-12829",
  "openTime": "2021-02-26",
  "patchDescription": "Cisco NX-OS\u662f\u9002\u7528\u4e8eCisco Nexus\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 NX-OS\u7684\u534f\u8bae\u72ec\u7acb\u591a\u64ad(PIM)\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5236PIM\u6570\u636e\u5305\u53d1\u9001\u5230\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u6d41\u91cf\u73af\u8def\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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 NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-12829\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco NX-OS"
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4",
  "serverity": "\u4e2d",
  "submitTime": "2021-02-25",
  "title": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-12829\uff09"
}

CVE-2021-1367 (GCVE-0-2021-1367)

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

Summary

A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted PIM packet to an affected device. A successful exploit could allow the attacker to cause a traffic loop, resulting in a DoS condition.

Severity ?

4.3 (Medium)


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

CWE

CWE-20

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 Software	Affected: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:11:16.870Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20210224 Cisco NX-OS Software Protocol Independent Multicast Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1367",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T20:48:20.897429Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-08T23:38:19.100Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco NX-OS Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2021-02-24T00:00:00",
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          "lang": "en",
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        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
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      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2021-02-24T19:30:45",
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      },
      "references": [
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          "tags": [
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          ],
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      "source": {
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        "defect": [
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        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco NX-OS Software Protocol Independent Multicast Denial of Service Vulnerability",
      "x_legacyV4Record": {
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          "STATE": "PUBLIC",
          "TITLE": "Cisco NX-OS Software Protocol Independent Multicast Denial of Service Vulnerability"
        },
        "affects": {
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            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Cisco NX-OS Software",
                      "version": {
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          ]
        },
        "exploit": [
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            "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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        },
        "references": {
          "reference_data": [
            {
              "name": "20210224 Cisco NX-OS Software Protocol Independent Multicast Denial of Service Vulnerability",
              "refsource": "CISCO",
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4"
            }
          ]
        },
        "source": {
          "advisory": "cisco-sa-nxos-pim-dos-Y8SjMz4",
          "defect": [
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    }
  },
  "cveMetadata": {
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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-2021-12829

CVE-2021-1367 (GCVE-0-2021-1367)

Tags

Sightings

Nomenclature