Vulnerability-Lookup

CNVD-2018-23895

Vulnerability from cnvd - Published: 2018-11-23

Title

Cisco NX-OS拒绝服务漏洞（CNVD-2018-23895）

Description

Cisco NX-OS是适用于思科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的简单网络管理协议（SNMP）输入数据包处理器存在拒绝服务漏洞。该漏洞源于对SNMP数据包中的SNMP协议数据单元（PDU）验证不当。远程认证攻击者可通过发送特制SNMP数据包利用该漏洞导致SNMP应用程序多次重启，从而可导致系统级重启和拒绝服务。

Severity

高

Patch Name

Cisco NX-OS拒绝服务漏洞（CNVD-2018-23895）的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nxos-snmp

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nxos-snmp

Impacted products

Name
Cisco NX-OS

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "105668"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-0456"
    }
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  "description": "Cisco NX-OS\u662f\u9002\u7528\u4e8e\u601d\u79d1Nexus\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\u7b80\u5355\u7f51\u7edc\u7ba1\u7406\u534f\u8bae\uff08SNMP\uff09\u8f93\u5165\u6570\u636e\u5305\u5904\u7406\u5668\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9SNMP\u6570\u636e\u5305\u4e2d\u7684SNMP\u534f\u8bae\u6570\u636e\u5355\u5143\uff08PDU\uff09\u9a8c\u8bc1\u4e0d\u5f53\u3002\u8fdc\u7a0b\u8ba4\u8bc1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236SNMP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4SNMP\u5e94\u7528\u7a0b\u5e8f\u591a\u6b21\u91cd\u542f\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u7cfb\u7edf\u7ea7\u91cd\u542f\u548c\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Cisco",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\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-20181017-nxos-snmp",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-23895",
  "openTime": "2018-11-23",
  "patchDescription": "Cisco NX-OS\u662f\u9002\u7528\u4e8e\u601d\u79d1Nexus\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\u7b80\u5355\u7f51\u7edc\u7ba1\u7406\u534f\u8bae\uff08SNMP\uff09\u8f93\u5165\u6570\u636e\u5305\u5904\u7406\u5668\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9SNMP\u6570\u636e\u5305\u4e2d\u7684SNMP\u534f\u8bae\u6570\u636e\u5355\u5143\uff08PDU\uff09\u9a8c\u8bc1\u4e0d\u5f53\u3002\u8fdc\u7a0b\u8ba4\u8bc1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236SNMP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4SNMP\u5e94\u7528\u7a0b\u5e8f\u591a\u6b21\u91cd\u542f\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u7cfb\u7edf\u7ea7\u91cd\u542f\u548c\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-2018-23895\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco NX-OS"
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  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nxos-snmp",
  "serverity": "\u9ad8",
  "submitTime": "2018-10-18",
  "title": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-23895\uff09"
}

CVE-2018-0456 (GCVE-0-2018-0456)

Vulnerability from cvelistv5 – Published: 2018-10-17 20:00 – Updated: 2024-11-26 14:25

Title

Cisco NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability

Summary

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application of an affected device to restart unexpectedly. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

Severity

7.7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-25 18:47 UTC

CWE

CWE-20

Assigner

cisco mitre root

References

3 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
http://www.securitytracker.com/id/1041921	vdb-entryx_refsource_SECTRACK
http://www.securityfocus.com/bid/105668	vdb-entryx_refsource_BID

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco NX-OS Software for Nexus 3000 Series 7.0(3)I7(3)	Affected: n/a

Date Public

2018-10-17 00:00

Show details on NVD website

JSON

To clipboard

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            "tags": [
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            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nxos-snmp"
          },
          {
            "name": "1041921",
            "tags": [
              "vdb-entry",
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          },
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          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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                  },
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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.

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.

Action not permitted

CNVD-2018-23895

CVE-2018-0456 (GCVE-0-2018-0456)

Tags

Sightings

Nomenclature

Related by attack behaviour