Vulnerability-Lookup

CNVD-2020-16485

Vulnerability from cnvd - Published: 2020-03-10

Title

Cisco Nexus 9000 Series Fabric Switches缓冲区溢出漏洞

Description

Cisco Nexus 9000 Series Fabric Switches是美国思科（Cisco）公司的一款9000系列光纤交换机。 Cisco Nexus 9000 Series Switch Software（ACI Mode）13.2(7f)之前版本和14.x版本中的LLDP子系统存在缓冲区溢出漏洞，该漏洞源于程序未能对LLDP帧头中TLV字段进行正确的输入验证，攻击者可通过发送特制的LLDP数据包利用该漏洞造成拒绝服务或以root权限执行任意代码。

Severity

高

Patch Name

Cisco Nexus 9000 Series Fabric Switches缓冲区溢出漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvp92121

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190731-nxos-bo

Impacted products

Name
['Cisco Nexus 9000 Series Switch Software <13.2(7f)', 'Cisco Nexus 9000 Series Switch Software 14.*']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-1901",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-1901"
    }
  },
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  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://bst.cloudapps.cisco.com/bugsearch/bug/CSCvp92121",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-16485",
  "openTime": "2020-03-10",
  "patchDescription": "Cisco Nexus 9000 Series Fabric Switches\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u6b3e9000\u7cfb\u5217\u5149\u7ea4\u4ea4\u6362\u673a\u3002\r\n\r\nCisco Nexus 9000 Series Switch Software\uff08ACI Mode\uff0913.2(7f)\u4e4b\u524d\u7248\u672c\u548c14.x\u7248\u672c\u4e2d\u7684LLDP\u5b50\u7cfb\u7edf\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u5bf9LLDP\u5e27\u5934\u4e2dTLV\u5b57\u6bb5\u8fdb\u884c\u6b63\u786e\u7684\u8f93\u5165\u9a8c\u8bc1\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236\u7684LLDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\u6216\u4ee5root\u6743\u9650\u6267\u884c\u4efb\u610f\u4ee3\u7801\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",
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  "products": {
    "product": [
      "Cisco Nexus 9000 Series Switch Software \u003c13.2(7f)",
      "Cisco Nexus 9000 Series Switch Software 14.*"
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  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190731-nxos-bo",
  "serverity": "\u9ad8",
  "submitTime": "2019-08-01",
  "title": "Cisco Nexus 9000 Series Fabric Switches\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2019-1901 (GCVE-0-2019-1901)

Vulnerability from cvelistv5 – Published: 2019-07-31 17:25 – Updated: 2024-11-20 17:15

Title

Cisco Nexus 9000 Series ACI Mode Switch Software Link Layer Discovery Protocol Buffer Overflow Vulnerability

Summary

A vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an adjacent, unauthenticated attacker to cause a denial of service (DoS) condition or execute arbitrary code with root privileges. The vulnerability is due to improper input validation of certain type, length, value (TLV) fields of the LLDP frame header. An attacker could exploit this vulnerability by sending a crafted LLDP packet to the targeted device. A successful exploit may lead to a buffer overflow condition that could either cause a DoS condition or allow the attacker to execute arbitrary code with root privileges. Note: This vulnerability cannot be exploited by transit traffic through the device; the crafted packet must be targeted to a directly connected interface. This vulnerability affects Cisco Nexus 9000 Series Fabric Switches in ACI mode if they are running a Cisco Nexus 9000 Series ACI Mode Switch Software release prior to 13.2(7f) or any 14.x release.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-20 16:53 UTC

CWE

CWE-119

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 System Software	Affected: unspecified , < 13.2(7f) (custom)

Date Public

2019-07-31 00:00

Show details on NVD website

JSON

To clipboard

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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.