Vulnerability-Lookup

CNVD-2021-102881

Vulnerability from cnvd - Published: 2021-12-28

Title

Enbra Ewm数据伪造问题漏洞

Description

Enbra Ewm是捷克Enbra公司的一个通用读数装置。使用无线电读取水表、供暖成本指标和热量表。 Enbra EWM在1.7.29版本存在数据伪造问题漏洞，该漏洞源于软件不检查或检测由无线M-Bus安全模式5设备发送的重放攻击。相反，传感器的时间戳被读出的时间所取代，即使数据是较早数据的重放。目前没有详细的漏洞细节提供。

Severity

低

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.enbra.cz/

Reference

https://www.fit.vutbr.cz/~polcak/CVE-2021-34572.en

Impacted products

Name
Enbra EWM 1.7.29

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-34572",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-34572"
    }
  },
  "description": "Enbra Ewm\u662f\u6377\u514bEnbra\u516c\u53f8\u7684\u4e00\u4e2a\u901a\u7528\u8bfb\u6570\u88c5\u7f6e\u3002\u4f7f\u7528\u65e0\u7ebf\u7535\u8bfb\u53d6\u6c34\u8868\u3001\u4f9b\u6696\u6210\u672c\u6307\u6807\u548c\u70ed\u91cf\u8868\u3002\n\nEnbra EWM\u57281.7.29\u7248\u672c\u5b58\u5728\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8f6f\u4ef6\u4e0d\u68c0\u67e5\u6216\u68c0\u6d4b\u7531\u65e0\u7ebfM-Bus\u5b89\u5168\u6a21\u5f0f5\u8bbe\u5907\u53d1\u9001\u7684\u91cd\u653e\u653b\u51fb\u3002\u76f8\u53cd\uff0c\u4f20\u611f\u5668\u7684\u65f6\u95f4\u6233\u88ab\u8bfb\u51fa\u7684\u65f6\u95f4\u6240\u53d6\u4ee3\uff0c\u5373\u4f7f\u6570\u636e\u662f\u8f83\u65e9\u6570\u636e\u7684\u91cd\u653e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.enbra.cz/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-102881",
  "openTime": "2021-12-28",
  "products": {
    "product": "Enbra EWM 1.7.29"
  },
  "referenceLink": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34572.en",
  "serverity": "\u4f4e",
  "submitTime": "2021-09-18",
  "title": "Enbra Ewm\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2021-34572 (GCVE-0-2021-34572)

Vulnerability from cvelistv5 – Published: 2021-09-16 12:20 – Updated: 2024-09-16 17:23

Title

Insufficient Verification of Data Authenticity in Enbra EWM (replay attack)

Summary

Enbra EWM 1.7.29 does not check for or detect replay attacks sent by wireless M-Bus Security mode 5 devices. Instead timestamps of the sensor are replaced by the time of the readout even if the data is a replay of earlier data.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

CERTVDE icscert root

References

1 reference

URL	Tags
https://www.fit.vutbr.cz/~polcak/CVE-2021-34572.en	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Enbra	EWM 1.7.29	Affected: 03.11.2019

Date Public

2021-08-31 00:00

Credits

Libor POLČÁK reported to CERT@VDE

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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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CNVD-2021-102881

CVE-2021-34572 (GCVE-0-2021-34572)

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