Vulnerability-Lookup

CNVD-2021-39054

Vulnerability from cnvd - Published: 2021-06-03

Title

MQTT资源管理错误漏洞

Description

MQTT（Message Queuing Telemetry Transport,消息队列遥测传输）是一个ISO 标准（ISO/IEC PRF 20922）下基于发布 (Publish)/订阅 (Subscribe)范式的消息协议，它工作在TCP/IP协议族上，是为硬件性能低下的远程设备以及网络状况不好的情况下而设计的发布/订阅型消息协议。 MQTT protocol 3.1.1版本中存在安全漏洞，该漏洞源于协议要求设置超时的时间是客户端指定的1.5倍。远程攻击者可利用该漏洞造成拒绝服务（无法建立新连接）。

Severity

中

Formal description

目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法： http://mqtt.org/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-13849

Impacted products

Name
MQTT MQTT 3.1.1

Show details on source website

JSON

To clipboard

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      "cveNumber": "CVE-2020-13849"
    }
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  "formalWay": "\u76ee\u524d\u5382\u5546\u6682\u672a\u53d1\u5e03\u4fee\u590d\u63aa\u65bd\u89e3\u51b3\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528\u6b64\u8f6f\u4ef6\u7684\u7528\u6237\u968f\u65f6\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u6216\u53c2\u8003\u7f51\u5740\u4ee5\u83b7\u53d6\u89e3\u51b3\u529e\u6cd5\uff1a\r\nhttp://mqtt.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-39054",
  "openTime": "2021-06-03",
  "products": {
    "product": "MQTT MQTT 3.1.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-13849",
  "serverity": "\u4e2d",
  "submitTime": "2020-06-05",
  "title": "MQTT\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2020-13849 (GCVE-0-2020-13849)

Vulnerability from cvelistv5 – Published: 2020-06-04 20:16 – Updated: 2024-08-04 12:32

Summary

The MQTT protocol 3.1.1 requires a server to set a timeout value of 1.5 times the Keep-Alive value specified by a client, which allows remote attackers to cause a denial of service (loss of the ability to establish new connections), as demonstrated by SlowITe.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2266 records in the last 180 days details

References

2 references

URL	Tags
https://www.mdpi.com/1424-8220/20/10/2932	x_refsource_MISC
https://doi.org/10.3390/s20102932	x_refsource_MISC

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.

Vulnerability timeline

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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