Vulnerability-Lookup

CNVD-2020-19227

Vulnerability from cnvd - Published: 2020-03-25

Title

Cisco FXOS, IOS XR和NX-OS Software中Cisco Discovery协议拒绝服务漏洞

Description

Cisco NX-OS Software等都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco FXOS Software是一套运行在思科安全设备中的防火墙软件。Cisco IOS XR是一套为其网络设备开发的操作系统。 Cisco FXOS Software、Cisco IOS XR Software和Cisco NX-OS Software中Cisco Discovery Protocol的实现存在拒绝服务漏洞，该漏洞源于程序在处理Cisco Discovery Protocol时，缺少检查。远程攻击者可通过发送恶意的Cisco Discovery Protocol数据包重新加载受影响的设备，造成拒绝服务。

Severity

高

Patch Name

Cisco FXOS, IOS XR和NX-OS Software中Cisco Discovery协议拒绝服务漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-fxnxos-iosxr-cdp-dos

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-3120

Impacted products

Name
['Cisco NX-OS Software', 'Cisco IOS XR Software', 'Cisco FXOS Software']

Show details on source website

JSON

To clipboard

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  "number": "CNVD-2020-19227",
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}

CVE-2020-3120 (GCVE-0-2020-3120)

Vulnerability from cvelistv5 – Published: 2020-02-05 17:50 – Updated: 2024-11-15 17:42

Title

Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability

Summary

A vulnerability in the Cisco Discovery Protocol implementation for Cisco FXOS Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a missing check when the affected software processes Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to exhaust system memory, causing the device to reload. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

Severity

7.4 (High)


                        
                          CVSS:3.0/AV:A/AC:L/PR:N/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 2024-11-15 16:29 UTC

CWE

CWE-190

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 377 records in the last 180 days details

References

2 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
http://packetstormsecurity.com/files/156203/Cisco…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco IOS XR Software	Affected: unspecified , < 2.3.1.173 (custom)

Date Public

2020-02-05 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
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            "tags": [
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            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-fxnxos-iosxr-cdp-dos"
          },
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            "tags": [
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              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-3120",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                  },
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                  }
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        },
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    ],
    "cna": {
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          "vendor": "Cisco",
          "versions": [
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      ],
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        }
      ],
      "exploits": [
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          "value": "The Cisco Product Security Incident Response Team (PSIRT) is aware of public announcements about the vulnerability that is described in this advisory. Cisco PSIRT is not aware of any malicious use of this vulnerability."
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      ],
      "metrics": [
        {
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            "attackVector": "ADJACENT_NETWORK",
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            "CSCvr15083",
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  "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.

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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.
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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.

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