CNVD-2021-39674

Vulnerability from cnvd - Published: 2021-06-04
VLAI Severity ?
Title
CKEditor资源管理错误漏洞（CNVD-2021-39674）
Description
CKEditor是一套开源的、基于网页的文字编辑器。 CKEditor 5 存在资源管理错误漏洞，该漏洞源于一个正则表达式拒绝服务（ReDoS）漏洞。该漏洞允许滥用特定的正则表达式，这可能会导致性能显着下降，从而导致浏览器选项卡冻结。目前没有详细的漏洞细节提供。
Severity
中
Patch Name
CKEditor资源管理错误漏洞（CNVD-2021-39674）的补丁
Patch Description
CKEditor是一套开源的、基于网页的文字编辑器。 CKEditor 5 存在资源管理错误漏洞，该漏洞源于一个正则表达式拒绝服务（ReDoS）漏洞。该漏洞允许滥用特定的正则表达式，这可能会导致性能显着下降，从而导致浏览器选项卡冻结。目前没有详细的漏洞细节提供。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
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/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj

Reference
https://www.npmjs.com/package/@ckeditor/ckeditor5-font
Impacted products
Name
CKEditor CKEditor 5
Show details on source website
To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-21391",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-21391"
    }
  },
  "description": "CKEditor\u662f\u4e00\u5957\u5f00\u6e90\u7684\u3001\u57fa\u4e8e\u7f51\u9875\u7684\u6587\u5b57\u7f16\u8f91\u5668\u3002\n\nCKEditor 5 \u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u62d2\u7edd\u670d\u52a1\uff08ReDoS\uff09\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u5141\u8bb8\u6ee5\u7528\u7279\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u663e\u7740\u4e0b\u964d\uff0c\u4ece\u800c\u5bfc\u81f4\u6d4f\u89c8\u5668\u9009\u9879\u5361\u51bb\u7ed3\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-39674",
  "openTime": "2021-06-04",
  "patchDescription": "CKEditor\u662f\u4e00\u5957\u5f00\u6e90\u7684\u3001\u57fa\u4e8e\u7f51\u9875\u7684\u6587\u5b57\u7f16\u8f91\u5668\u3002\r\n\r\nCKEditor 5 \u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u62d2\u7edd\u670d\u52a1\uff08ReDoS\uff09\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u5141\u8bb8\u6ee5\u7528\u7279\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u663e\u7740\u4e0b\u964d\uff0c\u4ece\u800c\u5bfc\u81f4\u6d4f\u89c8\u5668\u9009\u9879\u5361\u51bb\u7ed3\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",
  "patchName": "CKEditor\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-39674\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "CKEditor CKEditor 5"
  },
  "referenceLink": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-04",
  "title": "CKEditor\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-39674\uff09"
}


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Sightings

Author Source Type Date

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.