Vulnerability-Lookup

CNVD-2021-12830

Vulnerability from cnvd - Published: 2021-02-26

Title

Cisco NX-OS拒绝服务漏洞（CNVD-2021-12830）

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中的ICMPv6处理存在拒绝服务漏洞，攻击者可通过向目标设备上的本地IPv6地址发送持续速率的特制ICMPv6数据包利用该漏洞导致设备的ICMPv6进程发生系统内存泄漏。

Severity

中

Patch Name

Cisco NX-OS拒绝服务漏洞（CNVD-2021-12830）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-icmpv6-dos-YD55jVCq

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-icmpv6-dos-YD55jVCq

Impacted products

Name
Cisco NX-OS

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1229",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1229"
    }
  },
  "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\u4e2d\u7684ICMPv6\u5904\u7406\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u76ee\u6807\u8bbe\u5907\u4e0a\u7684\u672c\u5730IPv6\u5730\u5740\u53d1\u9001\u6301\u7eed\u901f\u7387\u7684\u7279\u5236ICMPv6\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u7684ICMPv6\u8fdb\u7a0b\u53d1\u751f\u7cfb\u7edf\u5185\u5b58\u6cc4\u6f0f\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-icmpv6-dos-YD55jVCq",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-12830",
  "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\u4e2d\u7684ICMPv6\u5904\u7406\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u76ee\u6807\u8bbe\u5907\u4e0a\u7684\u672c\u5730IPv6\u5730\u5740\u53d1\u9001\u6301\u7eed\u901f\u7387\u7684\u7279\u5236ICMPv6\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u7684ICMPv6\u8fdb\u7a0b\u53d1\u751f\u7cfb\u7edf\u5185\u5b58\u6cc4\u6f0f\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-2021-12830\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco NX-OS"
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-icmpv6-dos-YD55jVCq",
  "serverity": "\u4e2d",
  "submitTime": "2021-02-25",
  "title": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-12830\uff09"
}

CVE-2021-1229 (GCVE-0-2021-1229)

Vulnerability from cvelistv5 – Published: 2021-02-24 19:30 – Updated: 2024-11-08 23:39

Title

Cisco NX-OS Software ICMP Version 6 Memory Leak Denial of Service Vulnerability

Summary

A vulnerability in ICMP Version 6 (ICMPv6) processing in Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a slow system memory leak, which over time could lead to a denial of service (DoS) condition. This vulnerability is due to improper error handling when an IPv6-configured interface receives a specific type of ICMPv6 packet. An attacker could exploit this vulnerability by sending a sustained rate of crafted ICMPv6 packets to a local IPv6 address on a targeted device. A successful exploit could allow the attacker to cause a system memory leak in the ICMPv6 process on the device. As a result, the ICMPv6 process could run out of system memory and stop processing traffic. The device could then drop all ICMPv6 packets, causing traffic instability on the device. Restoring device functionality would require a device reboot.

Severity

5.8 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-08 20:04 UTC

CWE

CWE-401

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

2021-02-24 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:02:56.382Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20210224 Cisco NX-OS Software ICMP Version 6 Memory Leak Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-icmpv6-dos-YD55jVCq"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1229",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T20:04:00.849888Z",
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        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
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          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2021-02-24T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "exploits": [
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      "metrics": [
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            "availabilityImpact": "LOW",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "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:L",
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      },
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          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-icmpv6-dos-YD55jVCq"
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        "defect": [
          [
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            "CSCvv96593"
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        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco NX-OS Software ICMP Version 6 Memory Leak Denial of Service Vulnerability",
      "x_legacyV4Record": {
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            }
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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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    "state": "PUBLISHED"
  },
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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.