Vulnerability-Lookup

CNVD-2020-23170

Vulnerability from cnvd - Published: 2020-04-16

Title

Zoom Client for Meetings加密问题漏洞

Description

Zoom Client是美国Zoom公司的一款支持多种平台的视频会议客户端应用程序。 Zoom Client for Meetings 4.6.9及之前版本中存在加密问题漏洞，该漏洞源于Zoom Client for Meetings使用AES的ECB模式进行视频和音频加密，在会议中所有与会者都使用单个128位密钥。攻击者可利用该漏洞解密加密密钥，获取会议的视频和音频信息。

Severity

高

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：

https://zoom.us/

Impacted products

Name
Zoom Client for Meetings <=4.6.9

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-11500"
    }
  },
  "description": "Zoom Client\u662f\u7f8e\u56fdZoom\u516c\u53f8\u7684\u4e00\u6b3e\u652f\u6301\u591a\u79cd\u5e73\u53f0\u7684\u89c6\u9891\u4f1a\u8bae\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\n\nZoom Client for Meetings 4.6.9\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eZoom Client for Meetings\u4f7f\u7528AES\u7684ECB\u6a21\u5f0f\u8fdb\u884c\u89c6\u9891\u548c\u97f3\u9891\u52a0\u5bc6\uff0c\u5728\u4f1a\u8bae\u4e2d\u6240\u6709\u4e0e\u4f1a\u8005\u90fd\u4f7f\u7528\u5355\u4e2a128\u4f4d\u5bc6\u94a5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u89e3\u5bc6\u52a0\u5bc6\u5bc6\u94a5\uff0c\u83b7\u53d6\u4f1a\u8bae\u7684\u89c6\u9891\u548c\u97f3\u9891\u4fe1\u606f\u3002",
  "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\n\r\nhttps://zoom.us/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-23170",
  "openTime": "2020-04-16",
  "products": {
    "product": "Zoom Client for Meetings \u003c=4.6.9"
  },
  "serverity": "\u9ad8",
  "submitTime": "2020-04-07",
  "title": "Zoom Client for Meetings\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-11500 (GCVE-0-2020-11500)

Vulnerability from cvelistv5 – Published: 2020-04-03 12:07 – Updated: 2024-08-04 11:35

Summary

Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption. Within a meeting, all participants use a single 128-bit key.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://citizenlab.ca/2020/04/move-fast-roll-your…	x_refsource_MISC
https://theintercept.com/2020/04/03/zooms-encrypt…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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            "url": "https://theintercept.com/2020/04/03/zooms-encryption-is-not-suited-for-secrets-and-has-surprising-links-to-china-researchers-discover/"
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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.