gsd-2021-21391
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0.
Aliases
Aliases
CVE-2021-21391


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-21391",
    "description": "CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version \u003c= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0.",
    "id": "GSD-2021-21391"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21391"
      ],
      "details": "CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version \u003c= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0.",
      "id": "GSD-2021-21391",
      "modified": "2023-12-13T01:23:10.366547Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ID": "CVE-2021-21391",
        "STATE": "PUBLIC",
        "TITLE": "Regular expression Denial of Service in multiple packages"
      },
      "affects": {
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            {
              "product": {
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                  {
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                    "version": {
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          }
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      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
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        }
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      "references": {
        "reference_data": [
          {
            "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm",
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          },
          {
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          },
          {
            "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-image",
            "refsource": "MISC",
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          {
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          {
            "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed",
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          {
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      },
      "source": {
        "advisory": "GHSA-3rh3-wfr4-76mj",
        "discovery": "UNKNOWN"
      }
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          "title": "Uncontrolled Resource Consumption",
          "urls": [
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          "package_slug": "npm/@ckeditor/ckeditor5-media-embed",
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          "solution": "Upgrade to version 27.0.0 or above.",
          "title": "Uncontrolled Resource Consumption",
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          "package_slug": "npm/@ckeditor/ckeditor5-widget",
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          "solution": "Upgrade to version 27.0.0 or above.",
          "title": "Uncontrolled Resource Consumption",
          "urls": [
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          ],
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              "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-list"
            },
            {
              "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font",
              "refsource": "MISC",
              "tags": [
                "Product",
                "Third Party Advisory"
              ],
              "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font"
            },
            {
              "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office",
              "refsource": "MISC",
              "tags": [
                "Product",
                "Third Party Advisory"
              ],
              "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office"
            },
            {
              "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget",
              "refsource": "MISC",
              "tags": [
                "Product",
                "Third Party Advisory"
              ],
              "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.3,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-05-10T18:22Z",
      "publishedDate": "2021-04-29T01:15Z"
    }
  }
}


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