Vulnerability-Lookup

CNVD-2020-14757

Vulnerability from cnvd - Published: 2020-03-01

Title

Cisco NX-OS Software信任管理问题漏洞

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 Nexus 3000 Series Switches和Nexus 9000 Series Switches（处于standalone NX-OS模式下）中的NX-OS Software中存在信任管理问题漏洞。远程攻击者可利用该漏洞绕过BGP MD5身份验证，与其他NX-OS设备建立BGP会话。

Severity

高

Patch Name

Cisco NX-OS Software信任管理问题漏洞的补丁

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-20200226-nxos-bgpmd5

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-3165

Impacted products

Name
['Cisco NX-OS Software 9.2(1)', 'Cisco NX-OS Software 9.2(2)', 'Cisco NX-OS Software 9.2(3)', 'Cisco NX-OS Software 9.3(1)']

Show details on source website

JSON

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    "cve": {
      "cveNumber": "CVE-2020-3165"
    }
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  "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 Nexus 3000 Series Switches\u548cNexus 9000 Series Switches\uff08\u5904\u4e8estandalone NX-OS\u6a21\u5f0f\u4e0b\uff09\u4e2d\u7684NX-OS Software\u4e2d\u5b58\u5728\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7BGP MD5\u8eab\u4efd\u9a8c\u8bc1\uff0c\u4e0e\u5176\u4ed6NX-OS\u8bbe\u5907\u5efa\u7acbBGP\u4f1a\u8bdd\u3002",
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  "title": "Cisco NX-OS Software\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-3165 (GCVE-0-2020-3165)

Vulnerability from cvelistv5 – Published: 2020-02-26 16:45 – Updated: 2024-11-15 17:39

Title

Cisco NX-OS Software Border Gateway Protocol MD5 Authentication Bypass Vulnerability

Summary

A vulnerability in the implementation of Border Gateway Protocol (BGP) Message Digest 5 (MD5) authentication in Cisco NX-OS Software could allow an unauthenticated, remote attacker to bypass MD5 authentication and establish a BGP connection with the device. The vulnerability occurs because the BGP MD5 authentication is bypassed if the peer does not have MD5 authentication configured, the NX-OS device does have BGP MD5 authentication configured, and the NX-OS BGP virtual routing and forwarding (VRF) name is configured to be greater than 19 characters. An attacker could exploit this vulnerability by attempting to establish a BGP session with the NX-OS peer. A successful exploit could allow the attacker to establish a BGP session with the NX-OS device without MD5 authentication. The Cisco implementation of the BGP protocol accepts incoming BGP traffic only from explicitly configured peers. To exploit this vulnerability, an attacker must send the malicious packets over a TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the affected system’s trusted network.

Severity

8.2 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-15 16:22 UTC

CWE

CWE-798

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: 9.2(1)

Date Public

2020-02-26 00:00

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T07:24:00.707Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "name": "20200226 Cisco NX-OS Software Border Gateway Protocol MD5 Authentication Bypass Vulnerability",
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        "title": "CVE Program Container"
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        "metrics": [
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                "id": "CVE-2020-3165",
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                  },
                  {
                    "Automatable": "yes"
                  },
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                  }
                ],
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            "integrityImpact": "HIGH",
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        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco NX-OS Software Border Gateway Protocol MD5 Authentication Bypass Vulnerability",
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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.