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CNVD-2024-37698

Vulnerability from cnvd - Published: 2024-09-05

Title

Cisco NX-OS Software拒绝服务漏洞（CNVD-2024-37698）

Description

Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco NX-OS Software存在拒绝服务漏洞，该漏洞源于对DHCPv6 RELAY-REPLY消息中的特定字段处理不当。攻击者利用该漏洞导致系统拒绝服务。

Severity

高

Patch Name

Cisco NX-OS Software拒绝服务漏洞（CNVD-2024-37698）的补丁

Patch Description

Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco NX-OS Software存在拒绝服务漏洞，该漏洞源于对DHCPv6 RELAY-REPLY消息中的特定字段处理不当。攻击者利用该漏洞导致系统拒绝服务。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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn

Reference

https://nvd.nist.gov/vuln/detail/CVE-2024-20446

Impacted products

Name
Cisco Cisco NX-OS Software

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2024-20446",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2024-20446"
    }
  },
  "description": "Cisco NX-OS Software\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4ea4\u6362\u673a\u4f7f\u7528\u7684\u6570\u636e\u4e2d\u5fc3\u7ea7\u64cd\u4f5c\u7cfb\u7edf\u8f6f\u4ef6\u3002\n\nCisco NX-OS Software\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9DHCPv6 RELAY-REPLY\u6d88\u606f\u4e2d\u7684\u7279\u5b9a\u5b57\u6bb5\u5904\u7406\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7cfb\u7edf\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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2024-37698",
  "openTime": "2024-09-05",
  "patchDescription": "Cisco NX-OS Software\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4ea4\u6362\u673a\u4f7f\u7528\u7684\u6570\u636e\u4e2d\u5fc3\u7ea7\u64cd\u4f5c\u7cfb\u7edf\u8f6f\u4ef6\u3002\r\n\r\nCisco NX-OS Software\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9DHCPv6 RELAY-REPLY\u6d88\u606f\u4e2d\u7684\u7279\u5b9a\u5b57\u6bb5\u5904\u7406\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7cfb\u7edf\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 Software\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2024-37698\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Cisco NX-OS Software"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2024-20446",
  "serverity": "\u9ad8",
  "submitTime": "2024-08-30",
  "title": "Cisco NX-OS Software\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2024-37698\uff09"
}

CVE-2024-20446 (GCVE-0-2024-20446)

Vulnerability from cvelistv5 – Published: 2024-08-28 16:31 – Updated: 2024-08-28 18:49

Title

Cisco NX-OS Software DHCPv6 Relay Agent Denial of Service Vulnerability

Summary

A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition.

Severity

8.6 (High)


                        
                          CVSS:3.1/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 2024-08-28 18:45 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

5 products

Vendor	Product	Version
Cisco	Cisco NX-OS Software	Affected: 10.2(1) Affected: 10.2(1q) Affected: 9.3(9) Affected: 8.2(11)
cisco	nx-os	Affected: 10.2\(1\) cpe:2.3:o:cisco:nx-os:10.2\(1\):::::::*
cisco	nx-os	Affected: 10.2\(1q\) cpe:2.3:o:cisco:nx-os:10.2\(1q\):::::::*
cisco	nx-os	Affected: 9.3\(9\) cpe:2.3:o:cisco:nx-os:9.3\(9\):::::::*
cisco	nx-os	Affected: 8.2\(11\) cpe:2.3:o:cisco:nx-os:8.2\(11\):::::::*

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JSON

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:cisco:nx-os:10.2\\(1\\):*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "nx-os",
            "vendor": "cisco",
            "versions": [
              {
                "status": "affected",
                "version": "10.2\\(1\\)"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:cisco:nx-os:10.2\\(1q\\):*:*:*:*:*:*:*"
            ],
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            "product": "nx-os",
            "vendor": "cisco",
            "versions": [
              {
                "status": "affected",
                "version": "10.2\\(1q\\)"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:cisco:nx-os:9.3\\(9\\):*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "nx-os",
            "vendor": "cisco",
            "versions": [
              {
                "status": "affected",
                "version": "9.3\\(9\\)"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:cisco:nx-os:8.2\\(11\\):*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "nx-os",
            "vendor": "cisco",
            "versions": [
              {
                "status": "affected",
                "version": "8.2\\(11\\)"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-20446",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-28T18:45:44.020456Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-28T18:49:32.927Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "defaultStatus": "unknown",
          "product": "Cisco NX-OS Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "10.2(1)"
            },
            {
              "status": "affected",
              "version": "10.2(1q)"
            },
            {
              "status": "affected",
              "version": "9.3(9)"
            },
            {
              "status": "affected",
              "version": "8.2(11)"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition."
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "NULL Pointer Dereference",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-08-28T16:31:32.514Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn"
        }
      ],
      "source": {
        "advisory": "cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn",
        "defects": [
          "CSCwk27906"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Cisco NX-OS Software DHCPv6 Relay Agent Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2024-20446",
    "datePublished": "2024-08-28T16:31:32.514Z",
    "dateReserved": "2023-11-08T15:08:07.678Z",
    "dateUpdated": "2024-08-28T18:49:32.927Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.