Vulnerability-Lookup

CNVD-2021-91638

Vulnerability from cnvd - Published: 2021-11-26

Title

MQTT缓冲区溢出漏洞

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。 Eclipse Paho MQTT C Client 1.1之前版本存在缓冲区溢出漏洞，该漏洞源于客户端不会检查readpacket中的rem_len大小。目前没有详细的漏洞细节提供。

Severity

高

Patch Name

MQTT缓冲区溢出漏洞的补丁

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://github.com/eclipse/paho.mqtt.embedded-c。

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-41036

Impacted products

Name
MQTT Eclipse Paho MQTT C Client <1.1

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-41036"
    }
  },
  "description": "MQTT\uff08Message Queuing Telemetry Transport,\u6d88\u606f\u961f\u5217\u9065\u6d4b\u4f20\u8f93\uff09\u662f\u4e00\u4e2aISO \u6807\u51c6\uff08ISO/IEC PRF 20922\uff09\u4e0b\u57fa\u4e8e\u53d1\u5e03 (Publish)/\u8ba2\u9605 (Subscribe)\u8303\u5f0f\u7684\u6d88\u606f\u534f\u8bae\uff0c\u5b83\u5de5\u4f5c\u5728TCP/IP\u534f\u8bae\u65cf\u4e0a\uff0c\u662f\u4e3a\u786c\u4ef6\u6027\u80fd\u4f4e\u4e0b\u7684\u8fdc\u7a0b\u8bbe\u5907\u4ee5\u53ca\u7f51\u7edc\u72b6\u51b5\u4e0d\u597d\u7684\u60c5\u51b5\u4e0b\u800c\u8bbe\u8ba1\u7684\u53d1\u5e03/\u8ba2\u9605\u578b\u6d88\u606f\u534f\u8bae\u3002\n\nEclipse Paho MQTT C Client 1.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5ba2\u6237\u7aef\u4e0d\u4f1a\u68c0\u67e5readpacket\u4e2d\u7684rem_len\u5927\u5c0f\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
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  "number": "CNVD-2021-91638",
  "openTime": "2021-11-26",
  "patchDescription": "MQTT\uff08Message Queuing Telemetry Transport,\u6d88\u606f\u961f\u5217\u9065\u6d4b\u4f20\u8f93\uff09\u662f\u4e00\u4e2aISO \u6807\u51c6\uff08ISO/IEC PRF 20922\uff09\u4e0b\u57fa\u4e8e\u53d1\u5e03 (Publish)/\u8ba2\u9605 (Subscribe)\u8303\u5f0f\u7684\u6d88\u606f\u534f\u8bae\uff0c\u5b83\u5de5\u4f5c\u5728TCP/IP\u534f\u8bae\u65cf\u4e0a\uff0c\u662f\u4e3a\u786c\u4ef6\u6027\u80fd\u4f4e\u4e0b\u7684\u8fdc\u7a0b\u8bbe\u5907\u4ee5\u53ca\u7f51\u7edc\u72b6\u51b5\u4e0d\u597d\u7684\u60c5\u51b5\u4e0b\u800c\u8bbe\u8ba1\u7684\u53d1\u5e03/\u8ba2\u9605\u578b\u6d88\u606f\u534f\u8bae\u3002\r\n\r\nEclipse Paho MQTT C Client 1.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5ba2\u6237\u7aef\u4e0d\u4f1a\u68c0\u67e5readpacket\u4e2d\u7684rem_len\u5927\u5c0f\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "MQTT Eclipse Paho MQTT C Client  \u003c1.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-41036",
  "serverity": "\u9ad8",
  "submitTime": "2021-11-04",
  "title": "MQTT\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-41036 (GCVE-0-2021-41036)

Vulnerability from cvelistv5 – Published: 2021-11-02 23:15 – Updated: 2024-08-04 02:59

Summary

In versions prior to 1.1 of the Eclipse Paho MQTT C Client, the client does not check rem_len size in readpacket.

Severity

No CVSS data available.

CWE

CWE-787 - Out-of-bounds Write

Assigner

eclipse mitre root

References

1 reference

URL	Tags
https://github.com/eclipse/paho.mqtt.embedded-c/i…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
The Eclipse Foundation	Eclipse Paho MQTT C Client	Affected: unspecified , < 1.1.0 (custom)

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.